From 803c4d880f54f66d2d64a2fe69a2d374dae62144 Mon Sep 17 00:00:00 2001
From: Colin Longman <Colin.Longman@microsoft.com>
Date: Tue, 9 Dec 2025 00:12:41 -0800
Subject: [PATCH 1/6] Update New-CsCallQueue.md

---
 teams/teams-ps/MicrosoftTeams/New-CsCallQueue.md | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/teams/teams-ps/MicrosoftTeams/New-CsCallQueue.md b/teams/teams-ps/MicrosoftTeams/New-CsCallQueue.md
index 39237f772e..3a695c536e 100644
--- a/teams/teams-ps/MicrosoftTeams/New-CsCallQueue.md
+++ b/teams/teams-ps/MicrosoftTeams/New-CsCallQueue.md
@@ -1157,6 +1157,12 @@ Accept wildcard characters: False
 
 The SharedCallQueueHistoryTemplateId parameter indicates the Shared Call Queue History template to apply to the call queue.
 
+> [!NOTE]
+> `-ConferenceMode` must be set to $true
+>
+> Shared call queue history is not availble when using a Teams channel for queue membership
+>  - `-ChannelId` and `-ChannelUserObjectId` are set.
+
 ```yaml
 Type: String
 Parameter Sets: (All)
@@ -1169,12 +1175,6 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
-> [!NOTE]
-> `-ConferenceMode` must be set to $true
->
-> Shared call queue history is not availble when using a Teams channel for queue membership
->  - `-ChannelId` and `-ChannelUserObjectId` are set.
-
 ### -ShiftsSchedulingGroupId
 
 Id of the Scheduling Group to connect a call queue to.

From 630e7a4c8813fa2c5b3973c69bfe0ef0a3c9b91d Mon Sep 17 00:00:00 2001
From: Colin Longman <Colin.Longman@microsoft.com>
Date: Tue, 9 Dec 2025 08:39:25 -0800
Subject: [PATCH 2/6] Update New-CsCallQueue.md

---
 teams/teams-ps/MicrosoftTeams/New-CsCallQueue.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/teams/teams-ps/MicrosoftTeams/New-CsCallQueue.md b/teams/teams-ps/MicrosoftTeams/New-CsCallQueue.md
index 3a695c536e..fee378e8fb 100644
--- a/teams/teams-ps/MicrosoftTeams/New-CsCallQueue.md
+++ b/teams/teams-ps/MicrosoftTeams/New-CsCallQueue.md
@@ -66,7 +66,7 @@ The New-CsCallQueue cmdlet creates a new Call Queue.
 > - -SharedCallQueueHistoryTemplateId
 >
 > Authorized users can't edit call queues with these features enabled:
-> - The call exception routing when the destination directly references another another Auto attendant or Call queue
+> - The call exception routing when the destination directly references another Auto attendant or Call queue
 >   - See [Nesting Auto attendants and Call queues](/microsoftteams/plan-auto-attendant-call-queue#nested-auto-attendants-and-call-queues)
 > - Call priorities
 

From e26bd743e457962e1753fa171a02d3bc94b2ca4f Mon Sep 17 00:00:00 2001
From: Colin Longman <Colin.Longman@microsoft.com>
Date: Tue, 9 Dec 2025 08:40:58 -0800
Subject: [PATCH 3/6] Update Set-CsCallQueue.md

---
 teams/teams-ps/MicrosoftTeams/Set-CsCallQueue.md | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/teams/teams-ps/MicrosoftTeams/Set-CsCallQueue.md b/teams/teams-ps/MicrosoftTeams/Set-CsCallQueue.md
index 806a5ce9b0..75102f92e9 100644
--- a/teams/teams-ps/MicrosoftTeams/Set-CsCallQueue.md
+++ b/teams/teams-ps/MicrosoftTeams/Set-CsCallQueue.md
@@ -68,7 +68,7 @@ Set-CsCallQueue cmdlet provides a way for you to modify the properties of an exi
 > - -SharedCallQueueHistoryTemplateId
 >
 > Authorized users can't edit call queues with these features enabled:
-> - The call exception routing when the destination directly references another another Auto attendant or Call queue
+> - The call exception routing when the destination directly references another Auto attendant or Call queue
 >   - See [Nesting Auto attendants and Call queues](/microsoftteams/plan-auto-attendant-call-queue#nested-auto-attendants-and-call-queues)
 > - Call priorities
 
@@ -1174,6 +1174,12 @@ Accept wildcard characters: False
 
 The SharedCallQueueHistoryTemplateId parameter indicates the Shared Call Queue History template to apply to the call queue.
 
+> [!NOTE]
+> `-ConferenceMode` must be set to $true
+>
+> Shared call queue history is not availble when using a Teams channel for queue membership
+>  - `-ChannelId` and `-ChannelUserObjectId` are set.
+
 ```yaml
 Type: String
 Parameter Sets: (All)
@@ -1186,12 +1192,6 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
-> [!NOTE]
-> `-ConferenceMode` must be set to $true
->
-> Shared call queue history is not availble when using a Teams channel for queue membership
->  - `-ChannelId` and `-ChannelUserObjectId` are set.
-
 ### -ShiftsSchedulingGroupId
 
 Id of the Scheduling Group to connect a call queue to.

From e15285f26a6f9113401d6019fc12a4760b445e98 Mon Sep 17 00:00:00 2001
From: Chris Davis <chris.davis@microsoft.com>
Date: Tue, 9 Dec 2025 10:09:31 -0800
Subject: [PATCH 4/6] Added Caution alert to Identity param 1

---
 exchange/exchange-ps/ExchangePowerShell/Get-ADPermission.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ADSite.md           | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ADSiteLink.md       | 2 ++
 .../ExchangePowerShell/Get-ATPBuiltInProtectionRule.md          | 2 ++
 .../ExchangePowerShell/Get-ATPProtectionPolicyRule.md           | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-AcceptedDomain.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDevice.md | 2 ++
 .../ExchangePowerShell/Get-ActiveSyncDeviceAccessRule.md        | 2 ++
 .../Get-ActiveSyncDeviceAutoblockThreshold.md                   | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceClass.md | 2 ++
 .../ExchangePowerShell/Get-ActiveSyncDeviceStatistics.md        | 2 ++
 .../ExchangePowerShell/Get-ActiveSyncMailboxPolicy.md           | 2 ++
 .../ExchangePowerShell/Get-ActiveSyncOrganizationSettings.md    | 2 ++
 .../ExchangePowerShell/Get-ActiveSyncVirtualDirectory.md        | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-AdaptiveScope.md    | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-AddressBookPolicy.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-AddressList.md      | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-AddressRewriteEntry.md   | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-AdministrativeUnit.md    | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-AntiPhishPolicy.md  | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-AntiPhishRule.md    | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-App.md              | 2 ++
 .../ExchangePowerShell/Get-AppRetentionCompliancePolicy.md      | 2 ++
 .../ExchangePowerShell/Get-AppRetentionComplianceRule.md        | 2 ++
 .../ExchangePowerShell/Get-ApplicationAccessPolicy.md           | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-AtpPolicyForO365.md | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-AttachmentFilterEntry.md | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-AuditLogSearch.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-AuthRedirect.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-AuthServer.md       | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-AuthenticationPolicy.md  | 2 ++
 .../ExchangePowerShell/Get-AutoSensitivityLabelPolicy.md        | 2 ++
 .../ExchangePowerShell/Get-AutoSensitivityLabelRule.md          | 2 ++
 .../ExchangePowerShell/Get-AutodiscoverVirtualDirectory.md      | 2 ++
 .../ExchangePowerShell/Get-AvailabilityAddressSpace.md          | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-AvailabilityConfig.md    | 2 ++
 .../ExchangePowerShell/Get-AvailabilityReportOutage.md          | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-CASMailbox.md       | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-CASMailboxPlan.md   | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-CalendarDiagnosticLog.md | 2 ++
 .../ExchangePowerShell/Get-CalendarDiagnosticObjects.md         | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-CalendarNotification.md  | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-CalendarProcessing.md    | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-CaseHoldPolicy.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-CaseHoldRule.md     | 2 ++
 .../ExchangePowerShell/Get-ClassificationRuleCollection.md      | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-ClientAccessArray.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessRule.md | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-ClientAccessServer.md    | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-ClientAccessService.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-Clutter.md          | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-CmdletExtensionAgent.md  | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ComplianceCase.md   | 2 ++
 .../ExchangePowerShell/Get-ComplianceRetentionEvent.md          | 2 ++
 .../ExchangePowerShell/Get-ComplianceRetentionEventType.md      | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ComplianceSearch.md | 2 ++
 .../ExchangePowerShell/Get-ComplianceSearchAction.md            | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ComplianceTag.md    | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-ComplianceTagStorage.md  | 2 ++
 .../Get-ConfigAnalyzerPolicyRecommendation.md                   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-Contact.md          | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-ContentFilterPhrase.md   | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-DataClassification.md    | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-DataEncryptionPolicy.md  | 2 ++
 .../ExchangePowerShell/Get-DatabaseAvailabilityGroup.md         | 2 ++
 .../ExchangePowerShell/Get-DatabaseAvailabilityGroupNetwork.md  | 2 ++
 .../ExchangePowerShell/Get-DeliveryAgentConnector.md            | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-DetailsTemplate.md  | 2 ++
 .../ExchangePowerShell/Get-DeviceConditionalAccessPolicy.md     | 2 ++
 .../ExchangePowerShell/Get-DeviceConditionalAccessRule.md       | 2 ++
 .../ExchangePowerShell/Get-DeviceConfigurationPolicy.md         | 2 ++
 .../ExchangePowerShell/Get-DeviceConfigurationRule.md           | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-DevicePolicy.md     | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-DeviceTenantPolicy.md    | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-DeviceTenantRule.md | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-DistributionGroup.md     | 2 ++
 .../ExchangePowerShell/Get-DistributionGroupMember.md           | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-DkimSigningConfig.md     | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-DlpCompliancePolicy.md   | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-DlpComplianceRule.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-DlpEdmSchema.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-DlpPolicy.md        | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-DlpPolicyTemplate.md     | 2 ++
 .../ExchangePowerShell/Get-DlpSensitiveInformationType.md       | 2 ++
 84 files changed, 168 insertions(+)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ADPermission.md b/exchange/exchange-ps/ExchangePowerShell/Get-ADPermission.md
index a41e3a4695..a058e69b61 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ADPermission.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ADPermission.md
@@ -66,6 +66,8 @@ This example returns the permissions that have been granted to the user Chris on
 
 The Identity parameter specifies the identity of the object for which you're retrieving permissions. You can retrieve the permissions for any Active Directory object using its distinguished name (DN). If the object is an Exchange object, you might be able to use the object's name. If the DN or the object's name contains spaces, enclose the value in quotation marks (").
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ADRawEntryIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ADSite.md b/exchange/exchange-ps/ExchangePowerShell/Get-ADSite.md
index cf5940515c..287dd4ad8a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ADSite.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ADSite.md
@@ -49,6 +49,8 @@ This example displays the configuration details for the Active Directory site na
 
 The Identity parameter specifies the identity of the Active Directory site for which you want to view configuration details. The identity can be expressed as a GUID or the Active Directory site name. If the Active Directory site name includes spaces, enclose the name in quotation marks (").
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AdSiteIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ADSiteLink.md b/exchange/exchange-ps/ExchangePowerShell/Get-ADSiteLink.md
index b2dc772e31..ed5fddf235 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ADSiteLink.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ADSiteLink.md
@@ -54,6 +54,8 @@ This example returns a list of all IP site links in your organization that have
 
 The Identity parameter specifies the name or GUID of the IP site link for which you want to view configuration information.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AdSiteLinkIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ATPBuiltInProtectionRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-ATPBuiltInProtectionRule.md
index 2cb22176b0..3469e8d8a9 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ATPBuiltInProtectionRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ATPBuiltInProtectionRule.md
@@ -53,6 +53,8 @@ The Identity parameter specifies the rule that you want to view. You can use any
 
 The name of the only rule is ATP Built-In Protection Rule.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DehydrateableRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ATPProtectionPolicyRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-ATPProtectionPolicyRule.md
index 963826fe7e..9ef5cd3a91 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ATPProtectionPolicyRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ATPProtectionPolicyRule.md
@@ -62,6 +62,8 @@ The Identity parameter specifies the rule that you want to view. You can use any
 
 By default, the available rules (if they exist) are named Standard Preset Security Policy and Strict Preset Security Policy.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AcceptedDomain.md b/exchange/exchange-ps/ExchangePowerShell/Get-AcceptedDomain.md
index f8e9f88d86..b9b99aa968 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AcceptedDomain.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AcceptedDomain.md
@@ -55,6 +55,8 @@ This example lists all the authoritative accepted domains in your organization.
 
 The Identity parameter specifies a string value for the accepted domain. Enter either the GUID or the name of the accepted domain.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AcceptedDomainIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDevice.md b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDevice.md
index e1b5977672..3946d6c89e 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDevice.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDevice.md
@@ -87,6 +87,8 @@ The Identity parameter specifies the ActiveSync device that you want to view. Yo
 - DeviceIdentity
 - Multi-TenantID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ActiveSyncDeviceIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceAccessRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceAccessRule.md
index 0015a845a2..7b123afdf0 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceAccessRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceAccessRule.md
@@ -56,6 +56,8 @@ This example lists all device access rules set up on the server.
 
 The Identity parameter specifies the unique identifier for the device access rule.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ActiveSyncDeviceAccessRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceAutoblockThreshold.md b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceAutoblockThreshold.md
index 05910263be..1864404aec 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceAutoblockThreshold.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceAutoblockThreshold.md
@@ -49,6 +49,8 @@ This example retrieves the threshold settings for the Autoblock threshold rule f
 
 The Identity parameter specifies the name of the Autoblock threshold rule.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ActiveSyncDeviceAutoblockThresholdIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceClass.md b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceClass.md
index 3759a942e5..fc5fab1918 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceClass.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceClass.md
@@ -62,6 +62,8 @@ The Identity parameter specifies the ActiveSync device class that you want to vi
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ActiveSyncDeviceClassIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceStatistics.md
index d5c0c86cbd..cfca9398f0 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncDeviceStatistics.md
@@ -83,6 +83,8 @@ This example retrieves the statistics for the mobile phone configured to synchro
 
 The Identity parameter specifies the user's device ID. If the Mailbox parameter is specified, the Identity parameter is disabled.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ActiveSyncDeviceIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncMailboxPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncMailboxPolicy.md
index f77182f9be..c5285c622d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncMailboxPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncMailboxPolicy.md
@@ -65,6 +65,8 @@ This example returns the policy settings for the Mobile Device mailbox policy na
 
 The Identity parameter specifies the policy name.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncOrganizationSettings.md b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncOrganizationSettings.md
index c0fca3521c..cd999299be 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncOrganizationSettings.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncOrganizationSettings.md
@@ -47,6 +47,8 @@ This example retrieves the ActiveSync organization settings.
 
 The Identity parameter specifies the ActiveSync organization settings object that you want to view. The default name of this object is Mobile Mailbox Settings.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ActiveSyncOrganizationSettingsIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncVirtualDirectory.md b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncVirtualDirectory.md
index 789f2035f0..5005c4e249 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncVirtualDirectory.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ActiveSyncVirtualDirectory.md
@@ -83,6 +83,8 @@ The Name value uses the syntax `"VirtualDirectoryName (WebsiteName)"` from the p
 
 You can't use the Identity and Server parameters in the same command.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: VirtualDirectoryIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AdaptiveScope.md b/exchange/exchange-ps/ExchangePowerShell/Get-AdaptiveScope.md
index 1be2c8f35f..307e1baae6 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AdaptiveScope.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AdaptiveScope.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the adaptive scope that you want to view. You c
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AddressBookPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-AddressBookPolicy.md
index 0b2ce64377..9eb74eeb37 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AddressBookPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AddressBookPolicy.md
@@ -63,6 +63,8 @@ This example returns information about all address book policies for which the o
 
 The Identity parameter specifies the identity of the address book policy.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AddressList.md b/exchange/exchange-ps/ExchangePowerShell/Get-AddressList.md
index dda29c302b..8d85eebd8f 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AddressList.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AddressList.md
@@ -80,6 +80,8 @@ The Identity parameter specifies the address list that you want to view. You can
 
 You can't use this parameter with the Container or SearchText parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AddressListIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AddressRewriteEntry.md b/exchange/exchange-ps/ExchangePowerShell/Get-AddressRewriteEntry.md
index 0112ac6ebb..6078379143 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AddressRewriteEntry.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AddressRewriteEntry.md
@@ -54,6 +54,8 @@ This example returns the detailed configuration of a single address rewrite entr
 
 The Identity parameter specifies the address rewrite entry to be retrieved. The Identity parameter accepts a GUID or the unique address rewrite name. You can omit the Identity parameter label.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AddressRewriteEntryIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AdministrativeUnit.md b/exchange/exchange-ps/ExchangePowerShell/Get-AdministrativeUnit.md
index 3f34d4e2c3..a41a2c9a9b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AdministrativeUnit.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AdministrativeUnit.md
@@ -64,6 +64,8 @@ The Identity parameter specifies the administrative unit that you want to view.
 - Distinguished name (DN)
 - GUID (different value than Name)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AdministrativeUnitIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AntiPhishPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-AntiPhishPolicy.md
index 819eba076b..65a12ac746 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AntiPhishPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AntiPhishPolicy.md
@@ -60,6 +60,8 @@ The Identity parameter specifies the antiphish policy that you want to view. You
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AntiPhishPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AntiPhishRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-AntiPhishRule.md
index 729fd881f2..aa5aecbc85 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AntiPhishRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AntiPhishRule.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the antiphish rule that you want to view. You c
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-App.md b/exchange/exchange-ps/ExchangePowerShell/Get-App.md
index 6fcb3f8850..8391ce703a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-App.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-App.md
@@ -66,6 +66,8 @@ This example displays the summary list of apps installed by administrators for t
 
 The Identity parameter specifies the GUID of the app that you want to view. To find the GUID value of an app, run the command Get-App | Format-Table -Auto DisplayName,AppId.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AppIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AppRetentionCompliancePolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-AppRetentionCompliancePolicy.md
index 2e042d3558..3564cd5260 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AppRetentionCompliancePolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AppRetentionCompliancePolicy.md
@@ -62,6 +62,8 @@ The Identity parameter specifies the app retention compliance policy that you wa
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AppRetentionComplianceRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-AppRetentionComplianceRule.md
index ceca879adc..3b3ec72f51 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AppRetentionComplianceRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AppRetentionComplianceRule.md
@@ -56,6 +56,8 @@ The Identity parameter specifies the app retention compliance rule that you want
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ApplicationAccessPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-ApplicationAccessPolicy.md
index e2c7f08d47..d115ea32f5 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ApplicationAccessPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ApplicationAccessPolicy.md
@@ -55,6 +55,8 @@ This example returns detailed information for the specified application access p
 
 The Identity parameter specifies the application access policy that you want to view. To find the Identity value for the policy, run the command Get-ApplicationAccessPolicy | Format-List Identity,Description,ScopeName,AccessRight,AppID.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ApplicationAccessPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AtpPolicyForO365.md b/exchange/exchange-ps/ExchangePowerShell/Get-AtpPolicyForO365.md
index 4ab8b7aacd..7658863b78 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AtpPolicyForO365.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AtpPolicyForO365.md
@@ -56,6 +56,8 @@ This example returns detailed information about the default policy.
 
 The Identity parameter specifies the policy that you want to modify. There's only one policy named Default.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AtpPolicyForO365IdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AttachmentFilterEntry.md b/exchange/exchange-ps/ExchangePowerShell/Get-AttachmentFilterEntry.md
index 646a49659f..b37a16cb5d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AttachmentFilterEntry.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AttachmentFilterEntry.md
@@ -66,6 +66,8 @@ The Identity parameter specifies which attachment filter entry the command retri
 - ContentType: This value matches the attachment filter entry against the MIME content type.
 - FileName: This value matches the attachment filter entry against the simple file name.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AuditLogSearch.md b/exchange/exchange-ps/ExchangePowerShell/Get-AuditLogSearch.md
index 2045a18d7e..52f260499a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AuditLogSearch.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AuditLogSearch.md
@@ -59,6 +59,8 @@ This example returns a list of current administrator audit log searches.
 
 The Identity parameter specifies the GUID for an audit log search. You can run the command Get-AuditLogSearch | Format-List Identity to display the GUIDs for all current audit log searches.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AuditLogSearchIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AuthRedirect.md b/exchange/exchange-ps/ExchangePowerShell/Get-AuthRedirect.md
index 657835080e..d7eb0536d3 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AuthRedirect.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AuthRedirect.md
@@ -56,6 +56,8 @@ This example shows detailed information about the OAuth redirection object named
 
 The Identity parameter specifies the existing OAuth redirection object that you want to view. The object name uses the syntax `AuthRedirect-Bearer-GUID`.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AuthRedirectIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AuthServer.md b/exchange/exchange-ps/ExchangePowerShell/Get-AuthServer.md
index a92ebaca89..79baf6ba9c 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AuthServer.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AuthServer.md
@@ -60,6 +60,8 @@ The Identity parameter specifies the authorization server object that you want t
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AuthServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AuthenticationPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-AuthenticationPolicy.md
index a152234f65..dc4991767e 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AuthenticationPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AuthenticationPolicy.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the authentication policy you want to view. You
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AuthPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AutoSensitivityLabelPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-AutoSensitivityLabelPolicy.md
index 11abe41196..1c312c9716 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AutoSensitivityLabelPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AutoSensitivityLabelPolicy.md
@@ -54,6 +54,8 @@ The Identity parameter specifies the auto-labeling policy that you want to view.
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AutoSensitivityLabelRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-AutoSensitivityLabelRule.md
index 4db72e7ae3..2ca7112eb6 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AutoSensitivityLabelRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AutoSensitivityLabelRule.md
@@ -56,6 +56,8 @@ The Identity parameter specifies the auto-labeling policy rule that you want to
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AutodiscoverVirtualDirectory.md b/exchange/exchange-ps/ExchangePowerShell/Get-AutodiscoverVirtualDirectory.md
index d247dcbc5e..97569ce461 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AutodiscoverVirtualDirectory.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AutodiscoverVirtualDirectory.md
@@ -81,6 +81,8 @@ The Name value uses the syntax `"VirtualDirectoryName (WebsiteName)"` from the p
 
 You can't use the Identity and Server parameters in the same command.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: VirtualDirectoryIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityAddressSpace.md b/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityAddressSpace.md
index 5b91b6e32b..a3584e2481 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityAddressSpace.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityAddressSpace.md
@@ -60,6 +60,8 @@ The Identity parameter specifies the availability address space that you want to
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AvailabilityAddressSpaceIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityConfig.md
index 7a7ef25ed3..fbb39ab992 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityConfig.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityConfig.md
@@ -52,6 +52,8 @@ In Exchange Online, this examples returns the tenant IDs that free/busy informat
 
 The Identity parameter specifies the availability configuration that you want to view. You don't need to use this parameter, because there's only one availability configuration object named Availability Configuration in any organization.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OrganizationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityReportOutage.md b/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityReportOutage.md
index 34915d7e93..27bd0cb41b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityReportOutage.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-AvailabilityReportOutage.md
@@ -56,6 +56,8 @@ This example returns all outages reported for Microsoft Outlook services at all
 
 The Identity parameter specifies the outage.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: AvailabilityReportOutageIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-CASMailbox.md b/exchange/exchange-ps/ExchangePowerShell/Get-CASMailbox.md
index a7e139117d..418d7ae109 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-CASMailbox.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-CASMailbox.md
@@ -123,6 +123,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-CASMailboxPlan.md b/exchange/exchange-ps/ExchangePowerShell/Get-CASMailboxPlan.md
index 6f009eb993..7756b7b42d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-CASMailboxPlan.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-CASMailboxPlan.md
@@ -67,6 +67,8 @@ The Identity parameter specifies the CAS mailbox plan that you want to view. You
 
 The display name and name of the CAS mailbox plan is the same as the corresponding mailbox plan (for example, ExchangeOnlineEnterprise and `ExchangeOnlineEnterprise-GUID`).
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxPlanIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-CalendarDiagnosticLog.md b/exchange/exchange-ps/ExchangePowerShell/Get-CalendarDiagnosticLog.md
index 59170cb682..77acb82917 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-CalendarDiagnosticLog.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-CalendarDiagnosticLog.md
@@ -130,6 +130,8 @@ The Identity parameter specifies the mailbox that contains the calendar items. Y
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-CalendarDiagnosticObjects.md b/exchange/exchange-ps/ExchangePowerShell/Get-CalendarDiagnosticObjects.md
index b13e09d641..cb8f959abf 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-CalendarDiagnosticObjects.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-CalendarDiagnosticObjects.md
@@ -111,6 +111,8 @@ The Identity parameter specifies the mailbox or Microsoft 365 Group whose calend
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: UnifiedGroupOrUserMailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-CalendarNotification.md b/exchange/exchange-ps/ExchangePowerShell/Get-CalendarNotification.md
index 908c4eb1f9..3fa0d8f911 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-CalendarNotification.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-CalendarNotification.md
@@ -65,6 +65,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-CalendarProcessing.md b/exchange/exchange-ps/ExchangePowerShell/Get-CalendarProcessing.md
index 72c4b9ede9..e359865ed7 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-CalendarProcessing.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-CalendarProcessing.md
@@ -62,6 +62,8 @@ The Identity parameter specifies the resource mailbox that you want to view. You
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-CaseHoldPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-CaseHoldPolicy.md
index e1c850af72..ff1a526e8e 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-CaseHoldPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-CaseHoldPolicy.md
@@ -61,6 +61,8 @@ The Identity parameter specifies the case hold policy that you want to view. You
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-CaseHoldRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-CaseHoldRule.md
index 4a8be64d10..470bd60015 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-CaseHoldRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-CaseHoldRule.md
@@ -55,6 +55,8 @@ The Identity parameter specifies the case hold rule you want to view. You can us
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ClassificationRuleCollection.md b/exchange/exchange-ps/ExchangePowerShell/Get-ClassificationRuleCollection.md
index f4eaa39c92..3741bbf1ab 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ClassificationRuleCollection.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ClassificationRuleCollection.md
@@ -56,6 +56,8 @@ This example returns detailed information about the classification rule collecti
 
 The Identity parameter specifies the classification rule collection you want to view. You can use any value that uniquely identifies the classification rule collection. For example, you can specify the name, rule collection name or distinguished name (DN) of the classification rule collection.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ClassificationRuleCollectionIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessArray.md b/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessArray.md
index 1b1d7b33b3..25f5bfa7e0 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessArray.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessArray.md
@@ -68,6 +68,8 @@ The Identity parameter specifies the Client Access array that you want to view.
 - Fully qualified domain name (FQDN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ClientAccessArrayIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessRule.md
index bcdfb71b9e..551a60eaaf 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessRule.md
@@ -65,6 +65,8 @@ The Identity parameter specifies the client access rule that you want to view. Y
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ClientAccessRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessServer.md b/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessServer.md
index 3feb15fdc8..a187f97f52 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessServer.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessServer.md
@@ -65,6 +65,8 @@ You can use any value that uniquely identifies the server. For example:
 - Exchange Legacy DN (for example, /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=Exchange01)
 - GUID (for example, bc014a0d-1509-4ecc-b569-f077eec54942)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ClientAccessServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessService.md b/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessService.md
index 9045c8e052..6ccca4dfa8 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessService.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ClientAccessService.md
@@ -63,6 +63,8 @@ You can use any value that uniquely identifies the server. For example:
 - Exchange Legacy DN (for example, /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=Exchange01)
 - GUID (for example, bc014a0d-1509-4ecc-b569-f077eec54942)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ClientAccessServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-Clutter.md b/exchange/exchange-ps/ExchangePowerShell/Get-Clutter.md
index 726b83b98e..cea222fdda 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-Clutter.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-Clutter.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the mailbox that you want to modify. You can us
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-CmdletExtensionAgent.md b/exchange/exchange-ps/ExchangePowerShell/Get-CmdletExtensionAgent.md
index 3a30158c94..a729807280 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-CmdletExtensionAgent.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-CmdletExtensionAgent.md
@@ -69,6 +69,8 @@ The Identity parameter specifies the name of the cmdlet extension agent that you
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: CmdletExtensionAgentIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceCase.md b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceCase.md
index b28065f954..af71ce52e4 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceCase.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceCase.md
@@ -74,6 +74,8 @@ The Identity parameter specifies the compliance case that you want to view. You
 - Name
 - Identity (GUID value)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceCaseIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceRetentionEvent.md b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceRetentionEvent.md
index 06939dc393..2097497dcc 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceRetentionEvent.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceRetentionEvent.md
@@ -61,6 +61,8 @@ The Identity parameter specifies the compliance retention event that you want to
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceRetentionEventType.md b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceRetentionEventType.md
index a20b6d4bff..e4fd5a2adf 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceRetentionEventType.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceRetentionEventType.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the retention event type that you want to view.
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceSearch.md b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceSearch.md
index 982edba701..f1777589a0 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceSearch.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceSearch.md
@@ -81,6 +81,8 @@ To view these properties, you need to use the Identity parameter in the command.
 
 **Note**: The NumBindings property includes the primary mailbox, the main archive, and any additional archives for users included in the search. NumBindings is not the number of users included in the search, because each included user could have or not have a combination of a primary mailbox, a main archive, and additional archives.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceSearchIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceSearchAction.md b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceSearchAction.md
index 691fd08ab6..070f9d01e6 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceSearchAction.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceSearchAction.md
@@ -115,6 +115,8 @@ When you use the Identity parameter, more details are returned in the results. F
 - The affected location properties (for example, ExchangeLocation) are populated.
 - The CaseName property value is populated.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceSearchActionIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceTag.md b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceTag.md
index 6f58f8329b..d4881ba3b7 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceTag.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceTag.md
@@ -59,6 +59,8 @@ The Identity parameter specifies the label that you want to view. You can use an
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceTagStorage.md b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceTagStorage.md
index 668ad3eb8a..e8f3612767 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceTagStorage.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ComplianceTagStorage.md
@@ -53,6 +53,8 @@ The Identity parameter specifies the label policy that you want to view. You can
 
 However, there can be only one label policy in your organization.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ConfigAnalyzerPolicyRecommendation.md b/exchange/exchange-ps/ExchangePowerShell/Get-ConfigAnalyzerPolicyRecommendation.md
index 4b2485cfbf..ea9f4cd215 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ConfigAnalyzerPolicyRecommendation.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ConfigAnalyzerPolicyRecommendation.md
@@ -68,6 +68,8 @@ This example runs a comparison using the Strict preset security policy settings
 
 This parameter is reserved for internal Microsoft use.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ConfigAnalyzerPolicyRecommendationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-Contact.md b/exchange/exchange-ps/ExchangePowerShell/Get-Contact.md
index 81424e6505..a62c8dac23 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-Contact.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-Contact.md
@@ -90,6 +90,8 @@ The Identity parameter specifies the contact that you want to view. You can use
 - Canonical DN
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ContactIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ContentFilterPhrase.md b/exchange/exchange-ps/ExchangePowerShell/Get-ContentFilterPhrase.md
index 0f05d0c960..f6c658050b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ContentFilterPhrase.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ContentFilterPhrase.md
@@ -71,6 +71,8 @@ The Identity parameter specifies a custom word or phrase to display. You must en
 
 The Identity and Phrase parameters are interchangeable.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ContentFilterPhraseIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DataClassification.md b/exchange/exchange-ps/ExchangePowerShell/Get-DataClassification.md
index 5e0a7b3d85..c362d7363d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DataClassification.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DataClassification.md
@@ -95,6 +95,8 @@ The Identity parameter specifies the data classification rule that you want to v
 - LocalizedName
 - Identity GUID value
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DataClassificationIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DataEncryptionPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-DataEncryptionPolicy.md
index 93b66367bd..e28a159b52 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DataEncryptionPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DataEncryptionPolicy.md
@@ -64,6 +64,8 @@ The Identity parameter specifies the data encryption policy that you want to vie
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DataEncryptionPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DatabaseAvailabilityGroup.md b/exchange/exchange-ps/ExchangePowerShell/Get-DatabaseAvailabilityGroup.md
index 41cc3f44e7..e40573069a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DatabaseAvailabilityGroup.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DatabaseAvailabilityGroup.md
@@ -65,6 +65,8 @@ This example displays the properties of the DAG DAG2. Because it includes the St
 
 The Identity parameter specifies the name of the DAG to query.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DatabaseAvailabilityGroupIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DatabaseAvailabilityGroupNetwork.md b/exchange/exchange-ps/ExchangePowerShell/Get-DatabaseAvailabilityGroupNetwork.md
index e98e8e73a5..421a4db366 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DatabaseAvailabilityGroupNetwork.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DatabaseAvailabilityGroupNetwork.md
@@ -81,6 +81,8 @@ This example gets complete configuration and status information for the network
 
 The Identity parameter specifies the name of a DAG or a DAG network.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DatabaseAvailabilityGroupNetworkIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DeliveryAgentConnector.md b/exchange/exchange-ps/ExchangePowerShell/Get-DeliveryAgentConnector.md
index ebf13c319c..9dfcca7069 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DeliveryAgentConnector.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DeliveryAgentConnector.md
@@ -56,6 +56,8 @@ This example retrieves a list of all delivery agent connectors in your organizat
 
 The Identity parameter specifies the GUID or name of the delivery agent connector.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DeliveryAgentConnectorIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DetailsTemplate.md b/exchange/exchange-ps/ExchangePowerShell/Get-DetailsTemplate.md
index 769cf1f0e9..d098bc329d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DetailsTemplate.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DetailsTemplate.md
@@ -72,6 +72,8 @@ The Identity parameter specifies the GUID of the details template or specifies t
 - MailboxAgent
 - Contact
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DetailsTemplateIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConditionalAccessPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConditionalAccessPolicy.md
index 1992dc68e8..bf124660be 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConditionalAccessPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConditionalAccessPolicy.md
@@ -66,6 +66,8 @@ The Identity parameter specifies the mobile device conditional access policy tha
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConditionalAccessRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConditionalAccessRule.md
index 292589b539..102307fd2d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConditionalAccessRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConditionalAccessRule.md
@@ -64,6 +64,8 @@ This example shows details for the mobile device conditional access rule named S
 
 The Identity parameter specifies the mobile device conditional access rule that you want to view. The name of the rule uses the syntax `<Mobile device conditional access policy name>{<GUID value>}`. For example, `Secure Email{914f151c-394b-4da9-9422-f5a2f65dec30}`.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConfigurationPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConfigurationPolicy.md
index 506cbd4331..08e77a6c19 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConfigurationPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConfigurationPolicy.md
@@ -66,6 +66,8 @@ The Identity parameter specifies the mobile device configuration policy that you
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConfigurationRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConfigurationRule.md
index a0fadfef90..71961a7b59 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConfigurationRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceConfigurationRule.md
@@ -64,6 +64,8 @@ This example shows details about the mobile device configuration rule named Lega
 
 The Identity parameter specifies the mobile device configuration rule that you want to view. The name of the rule uses the syntax `<Mobile device configuration policy name>{<GUID value>}`. For example, `Legal Team{58b50d1c-2b18-461c-8893-3e20c648b136}`.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DevicePolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-DevicePolicy.md
index 147936b675..af63f4e474 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DevicePolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DevicePolicy.md
@@ -66,6 +66,8 @@ The Identity parameter specifies the mobile device policy that you want to view.
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceTenantPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceTenantPolicy.md
index cadb9db2ee..de4965d9ec 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceTenantPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceTenantPolicy.md
@@ -55,6 +55,8 @@ This example shows information for your organization's mobile device tenant poli
 
 The Identity parameter specifies the name of the mobile device tenant policy that you want to view, but there's only one in your organization. The name of the policy is a GUID value. For example, a6958701-c82c-4064-ac11-64e40e7f4032.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceTenantRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceTenantRule.md
index e97fbba444..77d18d6253 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DeviceTenantRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DeviceTenantRule.md
@@ -56,6 +56,8 @@ This example shows information for your organization's mobile device tenant rule
 
 The Identity parameter specifies the name of the mobile device tenant rule that you want to view, but there's only one in your organization. The name of the rule is a GUID value. For example, 7577c5f3-05a4-4f55-a0a3-82aab5e98c84.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DistributionGroup.md b/exchange/exchange-ps/ExchangePowerShell/Get-DistributionGroup.md
index 49bda2ddb0..3a1367d870 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DistributionGroup.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DistributionGroup.md
@@ -125,6 +125,8 @@ The Identity parameter specifies the distribution group or mail-enabled security
 - Email address
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DistributionGroupIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DistributionGroupMember.md b/exchange/exchange-ps/ExchangePowerShell/Get-DistributionGroupMember.md
index 13fe1b9472..6b4137e6f5 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DistributionGroupMember.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DistributionGroupMember.md
@@ -87,6 +87,8 @@ The Identity parameter specifies the distribution group or mail-enabled security
 - Email address
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DistributionGroupMemberIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DkimSigningConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-DkimSigningConfig.md
index edabbe60c2..02d53e4407 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DkimSigningConfig.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DkimSigningConfig.md
@@ -59,6 +59,8 @@ The Identity parameter specifies the DKIM signing policy that you want to view.
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DkimSigningConfigIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DlpCompliancePolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-DlpCompliancePolicy.md
index 50f80e0531..62654ef1df 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DlpCompliancePolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DlpCompliancePolicy.md
@@ -80,6 +80,8 @@ The Identity parameter specifies the DLP policy that you want to view. You can u
 - GUID
 - Id
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DlpComplianceRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-DlpComplianceRule.md
index 0903acec7c..ea7805583d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DlpComplianceRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DlpComplianceRule.md
@@ -68,6 +68,8 @@ The Identity parameter specifies the DLP rule that you want to view. You can use
 - GUID
 - Id
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DlpEdmSchema.md b/exchange/exchange-ps/ExchangePowerShell/Get-DlpEdmSchema.md
index 874113548b..485dc2606c 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DlpEdmSchema.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DlpEdmSchema.md
@@ -56,6 +56,8 @@ The Identity parameter specifies the DLP EDM schema that you want to view. You c
 - Name
 - Distinguished name (DN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: EdmStorageIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DlpPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-DlpPolicy.md
index 879c90089d..6616883523 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DlpPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DlpPolicy.md
@@ -60,6 +60,8 @@ The Identity parameter specifies the DLP policy that you want to view. You can u
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DlpPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DlpPolicyTemplate.md b/exchange/exchange-ps/ExchangePowerShell/Get-DlpPolicyTemplate.md
index 83bbc7993e..f55946d0a9 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DlpPolicyTemplate.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DlpPolicyTemplate.md
@@ -56,6 +56,8 @@ This example returns detailed information about the DLP policy template named GL
 
 The Identity parameter specifies the DLP policy template you want to view. You can use any value that uniquely identifies the DLP policy template. For example, you can specify the name, GUID or distinguished name (DN) of the DLP policy template.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DlpPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DlpSensitiveInformationType.md b/exchange/exchange-ps/ExchangePowerShell/Get-DlpSensitiveInformationType.md
index 601dfddd45..6265c13eb6 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DlpSensitiveInformationType.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DlpSensitiveInformationType.md
@@ -62,6 +62,8 @@ The Identity parameter specifies the sensitive information type that you want to
 - Name
 - Id (GUID value)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: SensitiveInformationTypeIdParameter
 Parameter Sets: (All)

From d5220f6a6868d9d7256bc2ff703569638255ac18 Mon Sep 17 00:00:00 2001
From: Chris Davis <chris.davis@microsoft.com>
Date: Tue, 9 Dec 2025 10:16:52 -0800
Subject: [PATCH 5/6] Added Caution alert to Identity param 2

---
 .../Get-DlpSensitiveInformationTypeRulePackage.md               | 2 ++
 .../ExchangePowerShell/Get-DynamicDistributionGroup.md          | 2 ++
 .../ExchangePowerShell/Get-DynamicDistributionGroupMember.md    | 2 ++
 .../ExchangePowerShell/Get-EOPProtectionPolicyRule.md           | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-EXOCasMailbox.md    | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-EXOMailbox.md       | 2 ++
 .../ExchangePowerShell/Get-EXOMailboxFolderPermission.md        | 2 ++
 .../ExchangePowerShell/Get-EXOMailboxFolderStatistics.md        | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-EXOMailboxPermission.md  | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-EXOMailboxStatistics.md  | 2 ++
 .../ExchangePowerShell/Get-EXOMobileDeviceStatistics.md         | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-EXORecipient.md     | 2 ++
 .../ExchangePowerShell/Get-EXORecipientPermission.md            | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-EcpVirtualDirectory.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-EdgeSubscription.md | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-EdgeSyncServiceConfig.md | 2 ++
 .../Get-EligibleDistributionGroupForMigration.md                | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-EmailAddressPolicy.md    | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-EmailTenantSettings.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-EventLogLevel.md    | 2 ++
 .../ExchangePowerShell/Get-EventsFromEmailConfiguration.md      | 2 ++
 .../ExchangePowerShell/Get-ExchangeAssistanceConfig.md          | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-ExchangeCertificate.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ExchangeFeature.md  | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ExchangeServer.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ExchangeSettings.md | 2 ++
 .../ExchangePowerShell/Get-ExoInformationBarrierPolicy.md       | 2 ++
 .../ExchangePowerShell/Get-ExoInformationBarrierSegment.md      | 2 ++
 .../ExchangePowerShell/Get-ExoPhishSimOverrideRule.md           | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-ExoSecOpsOverrideRule.md | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-ExternalInOutlook.md     | 2 ++
 .../ExchangePowerShell/Get-FailedContentIndexDocuments.md       | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-FeatureConfiguration.md  | 2 ++
 .../ExchangePowerShell/Get-FederatedOrganizationIdentifier.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-FederationTrust.md  | 2 ++
 .../ExchangePowerShell/Get-FilePlanPropertyAuthority.md         | 2 ++
 .../ExchangePowerShell/Get-FilePlanPropertyCategory.md          | 2 ++
 .../ExchangePowerShell/Get-FilePlanPropertyCitation.md          | 2 ++
 .../ExchangePowerShell/Get-FilePlanPropertyDepartment.md        | 2 ++
 .../ExchangePowerShell/Get-FilePlanPropertyReferenceId.md       | 2 ++
 .../ExchangePowerShell/Get-FilePlanPropertySubCategory.md       | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-FocusedInbox.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ForeignConnector.md | 2 ++
 .../ExchangePowerShell/Get-FrontendTransportService.md          | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-GlobalAddressList.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-Group.md            | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-HealthReport.md     | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-HoldCompliancePolicy.md  | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-HoldComplianceRule.md    | 2 ++
 .../ExchangePowerShell/Get-HostedConnectionFilterPolicy.md      | 2 ++
 .../ExchangePowerShell/Get-HostedContentFilterPolicy.md         | 2 ++
 .../ExchangePowerShell/Get-HostedContentFilterRule.md           | 2 ++
 .../ExchangePowerShell/Get-HostedOutboundSpamFilterPolicy.md    | 2 ++
 .../ExchangePowerShell/Get-HostedOutboundSpamFilterRule.md      | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-IPAllowListEntry.md | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-IPAllowListProvider.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-IPBlockListEntry.md | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-IPBlockListProvider.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-InboundConnector.md | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-InboxRule.md        | 2 ++
 .../Get-InformationBarrierPoliciesApplicationStatus.md          | 2 ++
 .../ExchangePowerShell/Get-InformationBarrierPolicy.md          | 2 ++
 .../ExchangePowerShell/Get-InformationBarrierRecipientStatus.md | 2 ++
 .../ExchangePowerShell/Get-IntraOrganizationConnector.md        | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-JournalRule.md      | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-Label.md            | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-LabelPolicy.md      | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-LinkedUser.md       | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-LogonStatistics.md  | 2 ++
 .../ExchangePowerShell/Get-M365DataAtRestEncryptionPolicy.md    | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-Mailbox.md          | 2 ++
 .../ExchangePowerShell/Get-MailboxAuditBypassAssociation.md     | 2 ++
 .../ExchangePowerShell/Get-MailboxAutoReplyConfiguration.md     | 2 ++
 .../ExchangePowerShell/Get-MailboxCalendarConfiguration.md      | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MailboxCalendarFolder.md | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MailboxDatabase.md  | 2 ++
 .../ExchangePowerShell/Get-MailboxDatabaseCopyStatus.md         | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MailboxExportRequest.md  | 2 ++
 .../ExchangePowerShell/Get-MailboxExportRequestStatistics.md    | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolder.md    | 2 ++
 .../ExchangePowerShell/Get-MailboxFolderPermission.md           | 2 ++
 .../ExchangePowerShell/Get-MailboxFolderStatistics.md           | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MailboxImportRequest.md  | 2 ++
 .../ExchangePowerShell/Get-MailboxImportRequestStatistics.md    | 2 ++
 84 files changed, 168 insertions(+)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DlpSensitiveInformationTypeRulePackage.md b/exchange/exchange-ps/ExchangePowerShell/Get-DlpSensitiveInformationTypeRulePackage.md
index 4cce370d02..c7d704e4a5 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DlpSensitiveInformationTypeRulePackage.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DlpSensitiveInformationTypeRulePackage.md
@@ -60,6 +60,8 @@ The Identity parameter specifies the sensitive information type rule package tha
 - LocalizedName
 - GUID (from the Identity value)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: SensitiveInformationTypeRuleCollectionIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DynamicDistributionGroup.md b/exchange/exchange-ps/ExchangePowerShell/Get-DynamicDistributionGroup.md
index 04bd1bfbd6..7ab59471f0 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DynamicDistributionGroup.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DynamicDistributionGroup.md
@@ -139,6 +139,8 @@ The Identity parameter specifies the dynamic distribution group that you want to
 - Email address
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DynamicGroupIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-DynamicDistributionGroupMember.md b/exchange/exchange-ps/ExchangePowerShell/Get-DynamicDistributionGroupMember.md
index 52dea07cde..9bac3f2574 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-DynamicDistributionGroupMember.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-DynamicDistributionGroupMember.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the dynamic distribution group. You can use any
 - Email address
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DynamicDistributionGroupMemberIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EOPProtectionPolicyRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-EOPProtectionPolicyRule.md
index 96a4b4e058..b3e255f2dd 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EOPProtectionPolicyRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EOPProtectionPolicyRule.md
@@ -62,6 +62,8 @@ The Identity parameter specifies the rule that you want to view. You can use any
 
 By default, the available rules (if they exist) are named Standard Preset Security Policy and Strict Preset Security Policy.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EXOCasMailbox.md b/exchange/exchange-ps/ExchangePowerShell/Get-EXOCasMailbox.md
index 173797cbcd..0496d70e9a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EXOCasMailbox.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EXOCasMailbox.md
@@ -103,6 +103,8 @@ Otherwise, you can use any other value that uniquely identifies the mailbox. For
 
 You can't use this parameter with the Anr, ExternalDirectoryObjectId, PrimarySmtpAddress, or UserPrincipalName parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailbox.md b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailbox.md
index 73afabf04d..d11bb6b56a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailbox.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailbox.md
@@ -125,6 +125,8 @@ Otherwise, you can use any value that uniquely identifies the mailbox. For examp
 
 You can't use this parameter with the Anr, ExternalDirectoryObjectId, PrimarySmtpAddress, or UserPrincipalName parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxFolderPermission.md b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxFolderPermission.md
index f4ab5fa2a7..5e777468db 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxFolderPermission.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxFolderPermission.md
@@ -69,6 +69,8 @@ Otherwise, you can use any value that uniquely identifies the mailbox. For examp
 
 You can't use this parameter with the ExternalDirectoryObjectId, PrimarySmtpAddress, or UserPrincipalName parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxFolderStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxFolderStatistics.md
index 62cc044bb4..7af0dd8c62 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxFolderStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxFolderStatistics.md
@@ -181,6 +181,8 @@ Otherwise, you can use any value that uniquely identifies the mailbox or mail us
 
 You can't use this parameter with the ExternalDirectoryObjectId, PrimarySmtpAddress, or UserPrincipalName parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxPermission.md b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxPermission.md
index 65358472d3..53205a050a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxPermission.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxPermission.md
@@ -107,6 +107,8 @@ Otherwise, you can use any value that uniquely identifies the mailbox. For examp
 
 You can't use this parameter with the ExternalDirectoryObjectId, PrimarySmtpAddress, or UserPrincipalName parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxStatistics.md
index 4840704c43..0a7c26750b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMailboxStatistics.md
@@ -132,6 +132,8 @@ Otherwise, you can use any value that uniquely identifies the mailbox. For examp
 
 You can't use this parameter with the ExternalDirectoryObjectId, PrimarySmtpAddress, or UserPrincipalName parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMobileDeviceStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMobileDeviceStatistics.md
index ac4e8c62b0..d430c88f86 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EXOMobileDeviceStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EXOMobileDeviceStatistics.md
@@ -82,6 +82,8 @@ The Identity parameter specifies the mobile device that you want to view. You ca
 
 You can't use this parameter with the ExternalDirectoryObjectId, Mailbox, PrimarySmtpAddress, or UserPrincipalName parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EXORecipient.md b/exchange/exchange-ps/ExchangePowerShell/Get-EXORecipient.md
index 46bbc0c6ff..21bcbd5db1 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EXORecipient.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EXORecipient.md
@@ -96,6 +96,8 @@ Otherwise, you can use any value that uniquely identifies the recipient. For exa
 
 You can't use this parameter with the Anr, ExternalDirectoryObjectId, PrimarySmtpAddress, or UserPrincipalName parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EXORecipientPermission.md b/exchange/exchange-ps/ExchangePowerShell/Get-EXORecipientPermission.md
index ec3795b475..569b01c755 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EXORecipientPermission.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EXORecipientPermission.md
@@ -84,6 +84,8 @@ Otherwise, you can use any value that uniquely identifies the mailbox. For examp
 
 You can't use this parameter with the ExternalDirectoryObjectId, PrimarySmtpAddress, or UserPrincipalName parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EcpVirtualDirectory.md b/exchange/exchange-ps/ExchangePowerShell/Get-EcpVirtualDirectory.md
index 088a852375..cbae99b172 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EcpVirtualDirectory.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EcpVirtualDirectory.md
@@ -83,6 +83,8 @@ The Name value uses the syntax `"VirtualDirectoryName (WebsiteName)"` from the p
 
 You can't use the Identity and Server parameters in the same command.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: VirtualDirectoryIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EdgeSubscription.md b/exchange/exchange-ps/ExchangePowerShell/Get-EdgeSubscription.md
index 33533e1544..ad19ec0631 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EdgeSubscription.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EdgeSubscription.md
@@ -56,6 +56,8 @@ This example retrieves the Edge Subscription information for the Edge Transport
 
 The Identity parameter specifies the name of the Edge Transport server for which you want to retrieve Edge Subscription information. The identity is expressed as the host name of the Edge Transport server. If no identity is specified, all Edge Subscriptions are returned.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: TransportServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EdgeSyncServiceConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-EdgeSyncServiceConfig.md
index a9aa2ccf24..325f47f870 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EdgeSyncServiceConfig.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EdgeSyncServiceConfig.md
@@ -48,6 +48,8 @@ This example reads the configuration of the Microsoft Exchange EdgeSync service
 
 The Identity parameter specifies the name of the Microsoft Exchange EdgeSync service configuration you want to view.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: EdgeSyncServiceConfigIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EligibleDistributionGroupForMigration.md b/exchange/exchange-ps/ExchangePowerShell/Get-EligibleDistributionGroupForMigration.md
index 37f3f6bc74..f882a39091 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EligibleDistributionGroupForMigration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EligibleDistributionGroupForMigration.md
@@ -59,6 +59,8 @@ The Identity parameter filters the results by the email address of the specified
 
 You can't use this parameter with the ManagedBy parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DistributionGroupIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EmailAddressPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-EmailAddressPolicy.md
index e9219c252c..d539b207d1 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EmailAddressPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EmailAddressPolicy.md
@@ -59,6 +59,8 @@ The Identity parameter specifies the email address policy that you want to view.
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: EmailAddressPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EmailTenantSettings.md b/exchange/exchange-ps/ExchangePowerShell/Get-EmailTenantSettings.md
index f8e70e2a35..4290dfdf41 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EmailTenantSettings.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EmailTenantSettings.md
@@ -45,6 +45,8 @@ This example shows whether priority account protection is enabled or disabled in
 
 The Identity parameter specifies the settings object that you want to view. The only settings object in the organization is named Default.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: EmailTenantSettingsIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EventLogLevel.md b/exchange/exchange-ps/ExchangePowerShell/Get-EventLogLevel.md
index 02209e4607..1d985059c0 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EventLogLevel.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EventLogLevel.md
@@ -57,6 +57,8 @@ The Identity parameter filters the results by the name of the event category. To
 
 You can't use this parameter with the Server parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ECIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-EventsFromEmailConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-EventsFromEmailConfiguration.md
index 52e03a6dbd..ba5fe329c3 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-EventsFromEmailConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-EventsFromEmailConfiguration.md
@@ -48,6 +48,8 @@ This example retrieves all events from email settings for peter@contoso.com's ma
 
 The Identity parameter specifies the mailbox that you want to view. You identify the mailbox by email address.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RecipientIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeAssistanceConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeAssistanceConfig.md
index a8a7a89513..165ea0c631 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeAssistanceConfig.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeAssistanceConfig.md
@@ -54,6 +54,8 @@ This example shows the configuration information for all organizations and forma
 
 The Identity parameter specifies the identity of the organization.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OrganizationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeCertificate.md b/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeCertificate.md
index 1e8ea547d3..d34fefbd94 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeCertificate.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeCertificate.md
@@ -159,6 +159,8 @@ You can't use this parameter with the Server parameter.
 
 The Thumbprint parameter, not the Identity parameter, is the positional parameter for this cmdlet. Therefore, when you specify a thumbprint value by itself, the command uses that value for the Thumbprint parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ExchangeCertificateIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeFeature.md b/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeFeature.md
index 81225184cb..8bdb905b38 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeFeature.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeFeature.md
@@ -64,6 +64,8 @@ The Identity parameter specifies the Exchange server that you want to modify. Yo
 
 If you don't use this parameter, the command returns information for all Exchange servers.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeServer.md b/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeServer.md
index f9f4549937..ef13ff7d71 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeServer.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeServer.md
@@ -75,6 +75,8 @@ The Identity parameter specifies the Exchange server that you want to view. You
 
 You can't use this parameter with the Domain parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ServerIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeSettings.md b/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeSettings.md
index b61081fd3d..a0819b42d8 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeSettings.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ExchangeSettings.md
@@ -70,6 +70,8 @@ The Identity parameter specifies the name of the Exchange setting object. You ca
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ExchangeSettingsIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ExoInformationBarrierPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-ExoInformationBarrierPolicy.md
index 39d0c63f23..07a739edc4 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ExoInformationBarrierPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ExoInformationBarrierPolicy.md
@@ -57,6 +57,8 @@ The Identity parameter specifies the Exchange Online information barrier policy
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ExoInformationBarrierSegment.md b/exchange/exchange-ps/ExchangePowerShell/Get-ExoInformationBarrierSegment.md
index 4abb7a13a8..f0112478b0 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ExoInformationBarrierSegment.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ExoInformationBarrierSegment.md
@@ -57,6 +57,8 @@ The Identity parameter specifies the Exchange Online information barrier segment
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: InformationBarrierSegmentIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ExoPhishSimOverrideRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-ExoPhishSimOverrideRule.md
index bd2639d1b8..0ddd403559 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ExoPhishSimOverrideRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ExoPhishSimOverrideRule.md
@@ -66,6 +66,8 @@ The Identity parameter specifies the phishing simulation override rule that you
 
 The name of the rule uses the following syntax: `_Exe:PhishSimOverr:<GUID\>` \[sic\] where \<GUID\> is a unique GUID value (for example, 6fed4b63-3563-495d-a481-b24a311f8329).
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ExoSecOpsOverrideRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-ExoSecOpsOverrideRule.md
index 958273ae8c..b213c7e767 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ExoSecOpsOverrideRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ExoSecOpsOverrideRule.md
@@ -66,6 +66,8 @@ The Identity parameter specifies the SecOps override rule that you want to view.
 
 The name of the rule uses the following syntax: `_Exe:SecOpsOverrid:<GUID\>` \[sic\] where \<GUID\> is a unique GUID value (for example, 312c23cf-0377-4162-b93d-6548a9977efb).
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ExternalInOutlook.md b/exchange/exchange-ps/ExchangePowerShell/Get-ExternalInOutlook.md
index 4a833e7025..4079d333a5 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ExternalInOutlook.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ExternalInOutlook.md
@@ -50,6 +50,8 @@ This example returns the settings of the external sender identification feature
 
 The Identity parameter specifies the GUID of the external sender identification object that you want to view. Although this parameter is available, you don't need to use it.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OrganizationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FailedContentIndexDocuments.md b/exchange/exchange-ps/ExchangePowerShell/Get-FailedContentIndexDocuments.md
index dcb44ce2e9..7cc8cf9199 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FailedContentIndexDocuments.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FailedContentIndexDocuments.md
@@ -108,6 +108,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: Mailbox
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FeatureConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-FeatureConfiguration.md
index ae9ba0feae..8dd9273181 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FeatureConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FeatureConfiguration.md
@@ -63,6 +63,8 @@ The Identity policy specifies the feature configuration that you want to view. Y
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FederatedOrganizationIdentifier.md b/exchange/exchange-ps/ExchangePowerShell/Get-FederatedOrganizationIdentifier.md
index 0e704f6ca6..7aa1ab69cd 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FederatedOrganizationIdentifier.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FederatedOrganizationIdentifier.md
@@ -57,6 +57,8 @@ This example retrieves the Exchange organization's federated organization identi
 
 The Identity parameter specifies the organization ID.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OrganizationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FederationTrust.md b/exchange/exchange-ps/ExchangePowerShell/Get-FederationTrust.md
index 7d1bbbde17..e39c94d2bc 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FederationTrust.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FederationTrust.md
@@ -47,6 +47,8 @@ This example retrieves properties of the federation trust configured for the Exc
 
 The Identity parameter specifies a federation trust ID. If not specified, the cmdlet returns all federation trusts configured for the Exchange organization.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: FederationTrustIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyAuthority.md b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyAuthority.md
index 057baf0d1d..4aba17c7ab 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyAuthority.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyAuthority.md
@@ -54,6 +54,8 @@ The Identity parameter specifies the custom file plan property authority that yo
 - Distinguished name (DN)
 - Id
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyCategory.md b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyCategory.md
index f3a73dbc1b..02f0e761a9 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyCategory.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyCategory.md
@@ -54,6 +54,8 @@ The Identity parameter specifies the custom file plan property category that you
 - Distinguished name (DN)
 - Id
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyCitation.md b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyCitation.md
index ade6daa96e..b22b62e034 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyCitation.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyCitation.md
@@ -54,6 +54,8 @@ The Identity parameter specifies the custom file plan property citation that you
 - Distinguished name (DN)
 - Id
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyDepartment.md b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyDepartment.md
index 2a66acd2ef..86cbe60e61 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyDepartment.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyDepartment.md
@@ -54,6 +54,8 @@ The Identity parameter specifies the custom file plan property department that y
 - Distinguished name (DN)
 - Id
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyReferenceId.md b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyReferenceId.md
index b3fa5d4ebb..2d1f333317 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyReferenceId.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertyReferenceId.md
@@ -54,6 +54,8 @@ The Identity parameter specifies the custom file plan property reference ID that
 - Distinguished name (DN)
 - Id
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertySubCategory.md b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertySubCategory.md
index 04407cdf4d..831eb800d1 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertySubCategory.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FilePlanPropertySubCategory.md
@@ -54,6 +54,8 @@ The Identity parameter specifies the custom file plan property subcategory that
 - Distinguished name (DN)
 - Id
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FocusedInbox.md b/exchange/exchange-ps/ExchangePowerShell/Get-FocusedInbox.md
index bf5e31049a..e0638a284b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FocusedInbox.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FocusedInbox.md
@@ -60,6 +60,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ForeignConnector.md b/exchange/exchange-ps/ExchangePowerShell/Get-ForeignConnector.md
index 807457d46f..03b2cb68b4 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ForeignConnector.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ForeignConnector.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the Foreign connector that you want to examine.
 - Connector name
 - ServerName\\ConnectorName
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ForeignConnectorIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-FrontendTransportService.md b/exchange/exchange-ps/ExchangePowerShell/Get-FrontendTransportService.md
index 61cce09aa7..e5bc7ffc7e 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-FrontendTransportService.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-FrontendTransportService.md
@@ -63,6 +63,8 @@ You can use any value that uniquely identifies the server. For example:
 - Exchange Legacy DN (for example, /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=Exchange01)
 - GUID (for example, bc014a0d-1509-4ecc-b569-f077eec54942)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: FrontendTransportServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-GlobalAddressList.md b/exchange/exchange-ps/ExchangePowerShell/Get-GlobalAddressList.md
index bc4c1f9df5..92af30edb9 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-GlobalAddressList.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-GlobalAddressList.md
@@ -70,6 +70,8 @@ The Identity parameter specifies the global address list that you want to view.
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: GlobalAddressListIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-Group.md b/exchange/exchange-ps/ExchangePowerShell/Get-Group.md
index 2d55c82323..a6e51320b3 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-Group.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-Group.md
@@ -92,6 +92,8 @@ The Identity parameter specifies the group object that you want to view. You can
 - Canonical DN
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: GroupIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-HealthReport.md b/exchange/exchange-ps/ExchangePowerShell/Get-HealthReport.md
index ac6f437d9e..940579aab0 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-HealthReport.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-HealthReport.md
@@ -65,6 +65,8 @@ The Identity parameter specifies the Exchange server where you want to run this
 - Distinguished name (DN)
 - Exchange Legacy DN
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-HoldCompliancePolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-HoldCompliancePolicy.md
index 13535a450a..166854589d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-HoldCompliancePolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-HoldCompliancePolicy.md
@@ -67,6 +67,8 @@ The Identity parameter specifies the preservation policy that you want to view.
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-HoldComplianceRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-HoldComplianceRule.md
index 7885973ffc..11d4eaf3c1 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-HoldComplianceRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-HoldComplianceRule.md
@@ -67,6 +67,8 @@ The Identity parameter specifies the preservation rule you want to view. You can
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-HostedConnectionFilterPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-HostedConnectionFilterPolicy.md
index 6a277a7fed..a325d565f2 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-HostedConnectionFilterPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-HostedConnectionFilterPolicy.md
@@ -59,6 +59,8 @@ The Identity parameter specifies the connection filter policy that you want to v
 
 Typically, you only have one connection filter policy: the default policy named Default.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: HostedConnectionFilterPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-HostedContentFilterPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-HostedContentFilterPolicy.md
index ad081ea01c..49dc666d34 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-HostedContentFilterPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-HostedContentFilterPolicy.md
@@ -66,6 +66,8 @@ The Identity parameter specifies the spam filter policy that you want to view. Y
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: HostedContentFilterPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-HostedContentFilterRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-HostedContentFilterRule.md
index e2df6989bd..b84d29aac3 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-HostedContentFilterRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-HostedContentFilterRule.md
@@ -59,6 +59,8 @@ The Identity parameter specifies the spam filter rule that you want to view. You
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-HostedOutboundSpamFilterPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-HostedOutboundSpamFilterPolicy.md
index c1b6455966..89d3e6a49a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-HostedOutboundSpamFilterPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-HostedOutboundSpamFilterPolicy.md
@@ -57,6 +57,8 @@ The Identity parameter specifies the outbound spam filter policy you want to vie
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: HostedOutboundSpamFilterPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-HostedOutboundSpamFilterRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-HostedOutboundSpamFilterRule.md
index e5e9fb6b86..1ed5a5e44f 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-HostedOutboundSpamFilterRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-HostedOutboundSpamFilterRule.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the outbound spam filter rule that you want to
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-IPAllowListEntry.md b/exchange/exchange-ps/ExchangePowerShell/Get-IPAllowListEntry.md
index 9554627b22..17deb695a4 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-IPAllowListEntry.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-IPAllowListEntry.md
@@ -64,6 +64,8 @@ This example returns an IP Allow list entry in which the specified IP address is
 
 The Identity parameter specifies the identity integer value of the IP Allow list entry that you want to view. When you add an entry to the IP Allow list, the Identity value is automatically assigned.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: IPListEntryIdentity
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-IPAllowListProvider.md b/exchange/exchange-ps/ExchangePowerShell/Get-IPAllowListProvider.md
index 4c02a98691..1ae4a4a077 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-IPAllowListProvider.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-IPAllowListProvider.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the IP Allow list provider that you want to vie
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: IPAllowListProviderIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-IPBlockListEntry.md b/exchange/exchange-ps/ExchangePowerShell/Get-IPBlockListEntry.md
index 497fb75329..1c521e29cf 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-IPBlockListEntry.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-IPBlockListEntry.md
@@ -64,6 +64,8 @@ This example returns machine-generated entries in the IP Block list that are ins
 
 The Identity parameter specifies the identity integer value of the IP Block list entry that you want to view. When you add an entry to the IP Block list, the Identity value is automatically assigned.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: IPListEntryIdentity
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-IPBlockListProvider.md b/exchange/exchange-ps/ExchangePowerShell/Get-IPBlockListProvider.md
index dd1c0f63eb..ba1e3e8653 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-IPBlockListProvider.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-IPBlockListProvider.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the IP Block list provider that you want to vie
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: IPBlockListProviderIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-InboundConnector.md b/exchange/exchange-ps/ExchangePowerShell/Get-InboundConnector.md
index cc7b89664c..b67ff5cbf9 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-InboundConnector.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-InboundConnector.md
@@ -56,6 +56,8 @@ This example lists all the Inbound connectors configured in your cloud-based org
 
 The Identity parameter specifies the name or GUID of the Inbound connector. If the Identity name contains spaces, enclose the name in quotation marks ("). You can omit the Identity parameter label.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: InboundConnectorIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-InboxRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-InboxRule.md
index 3428804391..9cb78c93fa 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-InboxRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-InboxRule.md
@@ -70,6 +70,8 @@ The Identity parameter specifies the Inbox rule that you want to view. You can u
 - Exchange Online: `MailboxAlias\RuleIdentity` (for example, `rzaher\16752869479666417665`).
 - On-premises Exchange: `MailboxCanonicalName\RuleIdentity` (for example, `contoso.com/Users/Rick Zaher\16752869479666417665`).
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: InboxRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierPoliciesApplicationStatus.md b/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierPoliciesApplicationStatus.md
index a7e9c553d8..cec89c5d67 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierPoliciesApplicationStatus.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierPoliciesApplicationStatus.md
@@ -63,6 +63,8 @@ This example returns all applications of information barrier policies by the Sta
 
 The Identity parameter specifies the information barrier policy application that you want to view. This value is a GUID that's displayed when you run the Start-InformationBarrierPoliciesApplication cmdlet (for example, a0551cee-db3d-4002-9fa0-94358035fdf2). You can also find the Identity value by running the command Get-InformationBarrierPoliciesApplicationStatus -All.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierPolicy.md
index 8afc72a88e..7c296ec9b6 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierPolicy.md
@@ -69,6 +69,8 @@ The Identity parameter specifies the information barrier policy that you want to
 
 You can't use this parameter with the ExOPolicyId parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierRecipientStatus.md b/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierRecipientStatus.md
index 2d332b51d7..6968338002 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierRecipientStatus.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-InformationBarrierRecipientStatus.md
@@ -69,6 +69,8 @@ The Identity parameter specifies the recipient that you want to view the segment
 - Email address
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RecipientIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-IntraOrganizationConnector.md b/exchange/exchange-ps/ExchangePowerShell/Get-IntraOrganizationConnector.md
index 7f8893e54e..ce5fceb391 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-IntraOrganizationConnector.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-IntraOrganizationConnector.md
@@ -60,6 +60,8 @@ The Identity parameter specifies the Intra-Organization connector that you want
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: IntraOrganizationConnectorIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-JournalRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-JournalRule.md
index 35a9d4bfd9..9a6539b44a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-JournalRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-JournalRule.md
@@ -56,6 +56,8 @@ This example retrieves the specific journal rule Brokerage Communications and pi
 
 The Identity parameter specifies the rule you want to view. Enter either the name or the GUID of the journal rule. You can omit the parameter label.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-Label.md b/exchange/exchange-ps/ExchangePowerShell/Get-Label.md
index e80d090d91..1dba79fe4a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-Label.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-Label.md
@@ -61,6 +61,8 @@ The Identity parameter specifies the sensitivity label that you want to view. Yo
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-LabelPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-LabelPolicy.md
index 758f9dee87..26ae257de5 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-LabelPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-LabelPolicy.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the sensitivity label policy that you want to v
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-LinkedUser.md b/exchange/exchange-ps/ExchangePowerShell/Get-LinkedUser.md
index cc39479866..cc006efd4b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-LinkedUser.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-LinkedUser.md
@@ -73,6 +73,8 @@ The Identity parameter specifies the linked user that you want to view. You can
 - Canonical DN
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: UserIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-LogonStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-LogonStatistics.md
index 553ff4fa15..15ef001e8d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-LogonStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-LogonStatistics.md
@@ -78,6 +78,8 @@ This parameter accepts pipeline input from the Get-Mailbox command.
 
 You can't use this parameter with the Database or Server parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: LogonableObjectIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-M365DataAtRestEncryptionPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-M365DataAtRestEncryptionPolicy.md
index 1208f2a526..65d0d69d56 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-M365DataAtRestEncryptionPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-M365DataAtRestEncryptionPolicy.md
@@ -64,6 +64,8 @@ The Identity parameter specifies the Microsoft 365 data-at-rest encryption polic
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DataEncryptionPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-Mailbox.md b/exchange/exchange-ps/ExchangePowerShell/Get-Mailbox.md
index f40d64b16c..b112bd2ca5 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-Mailbox.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-Mailbox.md
@@ -228,6 +228,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 
 You can't use this parameter with the Anr, Database, MailboxPlan or Server parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxAuditBypassAssociation.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxAuditBypassAssociation.md
index acbf528c80..f3f561a2b6 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxAuditBypassAssociation.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxAuditBypassAssociation.md
@@ -66,6 +66,8 @@ This example returns all accounts that are configured for mailbox audit logging
 
 The Identity parameter specifies the user account or computer account where you want to view the value of the AuditBypassEnabled property.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxAuditBypassAssociationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxAutoReplyConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxAutoReplyConfiguration.md
index 2b46e024e2..2bf17cf550 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxAutoReplyConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxAutoReplyConfiguration.md
@@ -77,6 +77,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxCalendarConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxCalendarConfiguration.md
index 253bb2bb1b..a51a7814e2 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxCalendarConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxCalendarConfiguration.md
@@ -97,6 +97,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: Default, Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxCalendarFolder.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxCalendarFolder.md
index 6a4ba7c36a..c8090669da 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxCalendarFolder.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxCalendarFolder.md
@@ -79,6 +79,8 @@ For the value of `MailboxID`, you can use any value that uniquely identifies the
 
 Example values for this parameter are `john@contoso.com:\Calendar` or `John:\Calendar`.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxFolderIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxDatabase.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxDatabase.md
index 1f12278e17..a259372987 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxDatabase.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxDatabase.md
@@ -85,6 +85,8 @@ The Identity parameter specifies the mailbox database that you want to view. You
 
 If you have multiple databases with the same name, the command retrieves all databases with the same name in the specified scope.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DatabaseIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxDatabaseCopyStatus.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxDatabaseCopyStatus.md
index 14fc9d8aa4..ab28b03ea2 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxDatabaseCopyStatus.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxDatabaseCopyStatus.md
@@ -80,6 +80,8 @@ This example returns the status for the copy of database DB1 on the Mailbox serv
 
 The Identity parameter specifies the name of the database copy for which the command should gather information. The Identity parameter can be specified in the form of `<Database>\<Server>`. Specifying just `<Database>` returns information for all copies of the database. This parameter can't be combined with the Server parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DatabaseCopyIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxExportRequest.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxExportRequest.md
index c7500dbc24..d4f566912a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxExportRequest.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxExportRequest.md
@@ -113,6 +113,8 @@ This parameter can't be with the following parameters:
 - Suspend
 - HighPriority
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxExportRequestIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxExportRequestStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxExportRequestStatistics.md
index 20454976c2..b7cf62036c 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxExportRequestStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxExportRequestStatistics.md
@@ -114,6 +114,8 @@ The Identity parameter specifies the identity of the export request. By default,
 
 This parameter can't be used with the RequestGuid or RequestQueue parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxExportRequestIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolder.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolder.md
index 682f41b72f..ab59186cde 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolder.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolder.md
@@ -110,6 +110,8 @@ If you don't specify the folder, the command returns information about folders i
 
 Example values for this parameter are `john@contoso.com:`, `John:\Inbox`.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxFolderIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolderPermission.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolderPermission.md
index 5ee63ba381..e2eb968c0c 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolderPermission.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolderPermission.md
@@ -83,6 +83,8 @@ For the value of `MailboxID`, you can use any value that uniquely identifies the
 
 Example values for this parameter are `john@contoso.com:\Calendar` or `John:\Inbox\Reports`.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxFolderIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolderStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolderStatistics.md
index dfc0f44929..37622e2c65 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolderStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxFolderStatistics.md
@@ -132,6 +132,8 @@ The Identity parameter specifies the identity of the mailbox or mail user. You c
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: GeneralMailboxOrMailUserIdParameter
 Parameter Sets: Identity, AuditLog
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxImportRequest.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxImportRequest.md
index 1956f15684..40deddc983 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxImportRequest.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxImportRequest.md
@@ -98,6 +98,8 @@ You can't use this parameter with the following parameters:
 - Suspend
 - HighPriority
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxImportRequestIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxImportRequestStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxImportRequestStatistics.md
index 7712bbbfc7..17c723ad4f 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxImportRequestStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxImportRequestStatistics.md
@@ -116,6 +116,8 @@ The Identity parameter specifies the identity of the import request. By default,
 
 **Note**: In Exchange Online, the alias of a soft-deleted mailbox might match the alias of an active mailbox. To ensure uniqueness, use the RequestGuid value from the output of the Get-MailboxImportRequest cmdlet for the value of this parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxImportRequestIdParameter
 Parameter Sets: IdentityOnPremises, IdentityCloud

From 71bfa2e3db2c5ff5048cfa4343f2e0fd7d72c522 Mon Sep 17 00:00:00 2001
From: Chris Davis <chris.davis@microsoft.com>
Date: Tue, 9 Dec 2025 10:31:19 -0800
Subject: [PATCH 6/6] Added Caution alert to Identity param 3

---
 exchange/exchange-ps/ExchangePowerShell/Get-MailContact.md      | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MailPublicFolder.md | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MailUser.md         | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MailboxIRMAccess.md | 2 ++
 .../ExchangePowerShell/Get-MailboxJunkEmailConfiguration.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MailboxLocation.md  | 2 ++
 .../ExchangePowerShell/Get-MailboxMessageConfiguration.md       | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MailboxPermission.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MailboxPlan.md      | 2 ++
 .../ExchangePowerShell/Get-MailboxRegionalConfiguration.md      | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MailboxRepairRequest.md  | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MailboxRestoreRequest.md | 2 ++
 .../ExchangePowerShell/Get-MailboxRestoreRequestStatistics.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MailboxSearch.md    | 2 ++
 .../ExchangePowerShell/Get-MailboxSentItemsConfiguration.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MailboxServer.md    | 2 ++
 .../ExchangePowerShell/Get-MailboxSpellingConfiguration.md      | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MailboxStatistics.md     | 2 ++
 .../ExchangePowerShell/Get-MailboxTransportService.md           | 2 ++
 .../ExchangePowerShell/Get-MailboxUserConfiguration.md          | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MalwareFilterPolicy.md   | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MalwareFilterRule.md     | 2 ++
 .../ExchangePowerShell/Get-MalwareFilteringServer.md            | 2 ++
 .../ExchangePowerShell/Get-ManagedContentSettings.md            | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ManagedFolder.md    | 2 ++
 .../ExchangePowerShell/Get-ManagedFolderMailboxPolicy.md        | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ManagementRole.md   | 2 ++
 .../ExchangePowerShell/Get-ManagementRoleAssignment.md          | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-ManagementRoleEntry.md   | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ManagementScope.md  | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MapiVirtualDirectory.md  | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-Message.md          | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MessageCategory.md  | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MessageClassification.md | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MessageTrackingReport.md | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MigrationBatch.md   | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MigrationEndpoint.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MigrationUser.md    | 2 ++
 .../ExchangePowerShell/Get-MigrationUserStatistics.md           | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MobileDevice.md     | 2 ++
 .../ExchangePowerShell/Get-MobileDeviceMailboxPolicy.md         | 2 ++
 .../ExchangePowerShell/Get-MobileDeviceStatistics.md            | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MonitoringItemHelp.md    | 2 ++
 .../ExchangePowerShell/Get-MonitoringItemIdentity.md            | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-MoveRequest.md      | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-MoveRequestStatistics.md | 2 ++
 .../ExchangePowerShell/Get-MyAnalyticsFeatureConfig.md          | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-NetworkConnectionInfo.md | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-Notification.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-OMEConfiguration.md | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-OabVirtualDirectory.md   | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-OfflineAddressBook.md    | 2 ++
 .../ExchangePowerShell/Get-OnPremisesOrganization.md            | 2 ++
 .../ExchangePowerShell/Get-OnlineMeetingConfiguration.md        | 2 ++
 .../ExchangePowerShell/Get-OrganizationRelationship.md          | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-OrganizationSegment.md   | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-OrganizationalUnit.md    | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-OutboundConnector.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-OutlookAnywhere.md  | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-OutlookProtectionRule.md | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-OutlookProvider.md  | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-OwaMailboxPolicy.md | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-OwaVirtualDirectory.md   | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-PartnerApplication.md    | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-PendingDelicenseUser.md  | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-PerimeterConfig.md  | 2 ++
 .../ExchangePowerShell/Get-PhishSimOverridePolicy.md            | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-Place.md            | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-PolicyConfig.md     | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-PolicyTipConfig.md  | 2 ++
 .../ExchangePowerShell/Get-PowerShellVirtualDirectory.md        | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-ProtectionAlert.md  | 2 ++
 exchange/exchange-ps/ExchangePowerShell/Get-PublicFolder.md     | 2 ++
 .../Get-PublicFolderAdministrativePermission.md                 | 2 ++
 .../ExchangePowerShell/Get-PublicFolderClientPermission.md      | 2 ++
 .../exchange-ps/ExchangePowerShell/Get-PublicFolderDatabase.md  | 2 ++
 .../ExchangePowerShell/Get-PublicFolderItemStatistics.md        | 2 ++
 .../ExchangePowerShell/Get-PublicFolderMailboxDiagnostics.md    | 2 ++
 .../Get-PublicFolderMailboxMigrationRequest.md                  | 2 ++
 .../Get-PublicFolderMailboxMigrationRequestStatistics.md        | 2 ++
 .../ExchangePowerShell/Get-PublicFolderMigrationRequest.md      | 2 ++
 .../Get-PublicFolderMigrationRequestStatistics.md               | 2 ++
 .../ExchangePowerShell/Get-PublicFolderMoveRequest.md           | 2 ++
 .../ExchangePowerShell/Get-PublicFolderMoveRequestStatistics.md | 2 ++
 84 files changed, 168 insertions(+)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailContact.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailContact.md
index e1762e870e..85198b2812 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailContact.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailContact.md
@@ -87,6 +87,8 @@ The Identity parameter specifies the mail contact that you want to view. You can
 - Email address
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailContactIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailPublicFolder.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailPublicFolder.md
index 5c3de390b6..c7cc036cb5 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailPublicFolder.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailPublicFolder.md
@@ -85,6 +85,8 @@ The Identity parameter specifies the GUID or public folder name that represents
 
 You can omit the parameter label so that only the public folder name or GUID is supplied.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailPublicFolderIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailUser.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailUser.md
index 132c56f694..082be7ad8e 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailUser.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailUser.md
@@ -99,6 +99,8 @@ The Identity parameter specifies the mail user that you want to view. You can us
 - Email address
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailUserIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxIRMAccess.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxIRMAccess.md
index a20f74e575..84bcb7ede2 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxIRMAccess.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxIRMAccess.md
@@ -73,6 +73,8 @@ The Identity parameter specifies the mailbox where you want to view delegate acc
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxJunkEmailConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxJunkEmailConfiguration.md
index 982e3fe365..e8943629b0 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxJunkEmailConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxJunkEmailConfiguration.md
@@ -86,6 +86,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 
 You can use the wildcard character (\*) to identify multiple mailboxes.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxLocation.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxLocation.md
index d731ec4912..e4c5519e8e 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxLocation.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxLocation.md
@@ -114,6 +114,8 @@ In Exchange Online, you can find the TenantGUID and MailboxGUID values after you
 
 You can't use this parameter with the User parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxLocationIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxMessageConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxMessageConfiguration.md
index f3e799f010..a94a4e6058 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxMessageConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxMessageConfiguration.md
@@ -75,6 +75,8 @@ The Identity parameter specifies the mailbox. You can use any value that uniquel
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxPermission.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxPermission.md
index 74ca8ef07c..85dd20a40a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxPermission.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxPermission.md
@@ -114,6 +114,8 @@ The Identity parameter specifies the mailbox you want to view. You can use any v
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxPlan.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxPlan.md
index 34dbb6428e..b774cc020b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxPlan.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxPlan.md
@@ -67,6 +67,8 @@ The Identity parameter specifies the mailbox plan that you want to view. You can
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxPlanIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRegionalConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRegionalConfiguration.md
index 0947fd27bf..53d30bcdf7 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRegionalConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRegionalConfiguration.md
@@ -89,6 +89,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: Default, Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRepairRequest.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRepairRequest.md
index 2f7356ae9a..0199cebbd4 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRepairRequest.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRepairRequest.md
@@ -91,6 +91,8 @@ The Identity parameter specifies the mailbox repair request to display informati
 
 You can't use this parameter with the Database or Mailbox parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: StoreIntegrityCheckJobIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRestoreRequest.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRestoreRequest.md
index cec72542e6..dd28f99165 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRestoreRequest.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRestoreRequest.md
@@ -90,6 +90,8 @@ If you didn't specify a name for the restore request when it was created, Exchan
 
 You can't use this parameter with the Name parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxRestoreRequestIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRestoreRequestStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRestoreRequestStatistics.md
index 0420909f8f..4e7560eff9 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRestoreRequestStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxRestoreRequestStatistics.md
@@ -114,6 +114,8 @@ If you didn't specify a name for the restore request when it was created, Exchan
 
 You can't use this parameter with the MRSInstance or RequestQueue parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxRestoreRequestIdParameter
 Parameter Sets: IdentityOnPremises, IdentityCloud
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSearch.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSearch.md
index 98b2f45979..12f024fe2f 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSearch.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSearch.md
@@ -100,6 +100,8 @@ To improve the performance of this cmdlet in Exchange Online, some mailbox searc
 
 To view these properties, you have to provide the name of a mailbox search.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: SearchObjectIdParameter
 Parameter Sets: EwsStoreObjectIdentity, SearchObjectIdentity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSentItemsConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSentItemsConfiguration.md
index 6ed02a5bdc..aba93d3585 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSentItemsConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSentItemsConfiguration.md
@@ -78,6 +78,8 @@ The Identity parameter specifies the mailbox whose Sent Items configuration you
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxServer.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxServer.md
index ec9c99d48b..285fbdd12b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxServer.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxServer.md
@@ -61,6 +61,8 @@ The Identity parameter specifies the Mailbox server that you want to view. You c
 - GUID
 - Distinguished name (DN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSpellingConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSpellingConfiguration.md
index ba8137229d..dfd9002113 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSpellingConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxSpellingConfiguration.md
@@ -79,6 +79,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxStatistics.md
index afa6c78820..6bdea32db5 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxStatistics.md
@@ -165,6 +165,8 @@ The Identity parameter specifies the mailbox that you want to return statistics
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: GeneralMailboxOrMailUserIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxTransportService.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxTransportService.md
index 6baf5e6e72..0a1a35a16e 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxTransportService.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxTransportService.md
@@ -56,6 +56,8 @@ This example retrieves the detailed transport configuration information for the
 
 The Identity parameter specifies the server that you want to view.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxTransportServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxUserConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxUserConfiguration.md
index 20cc71b95a..1bce6b47c0 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MailboxUserConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MailboxUserConfiguration.md
@@ -59,6 +59,8 @@ The Identity parameter specifies the user configuration item that you want to vi
 - Valid values for MailboxFolder are folder names (for example, Inbox or Calendar), the value Configuration, or the value Root. Wildcards (\*) aren't supported.
 - Valid values for ItemName start with IPM.Configuration (for example, IPM.Configuration.Aggregated.OwaUserConfiguration. Wildcards (\*) are supported.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxUserConfigurationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilterPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilterPolicy.md
index fe9000d741..3bc3f993ac 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilterPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilterPolicy.md
@@ -56,6 +56,8 @@ This example retrieves detailed configuration information for the malware filter
 
 The Identity parameter specifies the malware filter policy that you want to view. You can use any value that uniquely identifies the policy. For example, you can use the name, GUID or distinguished name (DN) of the malware filter policy.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MalwareFilterPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilterRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilterRule.md
index 7b16455434..f42427d67c 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilterRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilterRule.md
@@ -55,6 +55,8 @@ This example retrieves detailed configuration information for the malware filter
 
 The Identity parameter specifies the malware filter rule that you want to view. You can use any value that uniquely identifies the rule. For example, you can use the name, GUID or distinguished name (DN) of the malware filter rule.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilteringServer.md b/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilteringServer.md
index 53a20c6cae..684fabe473 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilteringServer.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MalwareFilteringServer.md
@@ -59,6 +59,8 @@ The Identity parameter specifies the server where you want to view the anti-malw
 - Distinguished name (DN)
 - Exchange Legacy DN
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MalwareFilteringServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ManagedContentSettings.md b/exchange/exchange-ps/ExchangePowerShell/Get-ManagedContentSettings.md
index 3363cb27c8..29c6e182d9 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ManagedContentSettings.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ManagedContentSettings.md
@@ -75,6 +75,8 @@ The Identity parameter specifies the name, distinguished name (DN), or GUID of t
 
 This parameter can't be used with the FolderName parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ELCContentSettingsIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ManagedFolder.md b/exchange/exchange-ps/ExchangePowerShell/Get-ManagedFolder.md
index 603b909fa6..3898fa0165 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ManagedFolder.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ManagedFolder.md
@@ -63,6 +63,8 @@ This example retrieves information about the managed folder MyManagedFolder. The
 
 The Identity parameter specifies the name, distinguished name (DN), or GUID of the managed folder.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ELCFolderIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ManagedFolderMailboxPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-ManagedFolderMailboxPolicy.md
index 04ff9158a5..99ce2fdd7e 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ManagedFolderMailboxPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ManagedFolderMailboxPolicy.md
@@ -51,6 +51,8 @@ The Identity parameter is positional, which means you can use it without the -Id
 
 The Identity parameter specifies the name, distinguished name (DN), or GUID of the managed folder mailbox policy.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRole.md b/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRole.md
index c5b12d0a70..c4731cf6ee 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRole.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRole.md
@@ -118,6 +118,8 @@ This example lists the immediate children of the Mail Recipients role. Only the
 
 The Identity parameter specifies the role you want to view. If the role you want to view contains spaces, enclose the name in quotation marks ("). You can use the wildcard character (\*) and a partial role name to match multiple roles.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RoleIdParameter
 Parameter Sets: GetChildren, Recurse, Identity, Script
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRoleAssignment.md b/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRoleAssignment.md
index c9ef714304..fef5df891d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRoleAssignment.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRoleAssignment.md
@@ -137,6 +137,8 @@ This example retrieves all the role assignments that can modify the database Con
 
 The Identity parameter specifies the name of the role assignment to retrieve. If the name of the role assignment contains spaces, enclose it in quotation marks ("). If the RoleAssignee parameter is used, you can't use the Identity parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RoleAssignmentIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRoleEntry.md b/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRoleEntry.md
index 2653a15989..413787d3c6 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRoleEntry.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ManagementRoleEntry.md
@@ -75,6 +75,8 @@ You can use the wildcard character (\*) instead of the role, cmdlet name or both
 
 If the role entry name contains spaces, enclose the name in quotation marks (").
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RoleEntryIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ManagementScope.md b/exchange/exchange-ps/ExchangePowerShell/Get-ManagementScope.md
index 3b5949b7df..0156812747 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ManagementScope.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ManagementScope.md
@@ -74,6 +74,8 @@ This example retrieves a list of exclusive scopes.
 
 The Identity parameter specifies the name of the management scope to return. If the management scope name contains spaces, enclose it in quotation marks (").
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ManagementScopeIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MapiVirtualDirectory.md b/exchange/exchange-ps/ExchangePowerShell/Get-MapiVirtualDirectory.md
index 572f31c8f5..df3389a07e 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MapiVirtualDirectory.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MapiVirtualDirectory.md
@@ -85,6 +85,8 @@ The Name value uses the syntax `"VirtualDirectoryName (WebsiteName)"` from the p
 
 You can't use the Identity and Server parameters in the same command.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: VirtualDirectoryIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-Message.md b/exchange/exchange-ps/ExchangePowerShell/Get-Message.md
index 3ce55a4842..8575587379 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-Message.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-Message.md
@@ -103,6 +103,8 @@ This example displays all messages queued on the server named Server01. The resu
 
 The Identity parameter specifies the message. Valid input for this parameter uses the syntax Server\\Queue\\MessageInteger or Queue\\MessageInteger or MessageInteger, for example, Mailbox01\\contoso.com\\5 or 10. For details about message identity, see [Message identity](https://learn.microsoft.com/Exchange/mail-flow/queues/queues-and-messages-in-powershell#message-identity).
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MessageIdentity
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MessageCategory.md b/exchange/exchange-ps/ExchangePowerShell/Get-MessageCategory.md
index fdd042b6bd..bc244fa95d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MessageCategory.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MessageCategory.md
@@ -50,6 +50,8 @@ This example retrieves message categories from the mailbox User1.
 
 The Identity parameter specifies the name of the message category to be retrieved.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MessageCategoryIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MessageClassification.md b/exchange/exchange-ps/ExchangePowerShell/Get-MessageClassification.md
index b1e4ff3155..b274bb32dd 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MessageClassification.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MessageClassification.md
@@ -52,6 +52,8 @@ The Identity parameter specifies the message classification that you want to vie
 - Identity: `Default\<Name>` or `<Locale>\<Name>`; for example, "Default\My Message Classification" or "es-ES\My Message Classification".
 - ClassificationID (GUID)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MessageClassificationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MessageTrackingReport.md b/exchange/exchange-ps/ExchangePowerShell/Get-MessageTrackingReport.md
index dbe1ef3dea..98822c1162 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MessageTrackingReport.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MessageTrackingReport.md
@@ -75,6 +75,8 @@ The Identity parameter specifies the message tracking report ID that you want to
 
 You need to run the Search-MessageTrackingReport cmdlet to find the message tracking report ID for the specific message that you're tracking, and then pass the value of the MessageTrackingReportID field to this parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MessageTrackingReportId
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MigrationBatch.md b/exchange/exchange-ps/ExchangePowerShell/Get-MigrationBatch.md
index 0c0ec8d88d..2e0d8e5a74 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MigrationBatch.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MigrationBatch.md
@@ -108,6 +108,8 @@ The Identity parameter identifies the name of the current migration batch. The v
 
 If you use this parameter, you can't include the Endpoint parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MigrationBatchIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MigrationEndpoint.md b/exchange/exchange-ps/ExchangePowerShell/Get-MigrationEndpoint.md
index 31f0965b95..0f51d4b114 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MigrationEndpoint.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MigrationEndpoint.md
@@ -86,6 +86,8 @@ This example retrieves the settings for the migration endpoint, OnboardingME01.
 
 The Identity parameter specifies the name of the migration endpoint you want to retrieve settings for.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MigrationEndpointIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MigrationUser.md b/exchange/exchange-ps/ExchangePowerShell/Get-MigrationUser.md
index b152b9d8ca..563d25ffd3 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MigrationUser.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MigrationUser.md
@@ -102,6 +102,8 @@ This example retrieves more detailed information about any ongoing migration for
 
 The Identity parameter specifies the particular ongoing migration that you want to retrieve information about. The Identity parameter is usually represented as an email address.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MigrationUserIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MigrationUserStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-MigrationUserStatistics.md
index 8b8cc0bd56..a848d36698 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MigrationUserStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MigrationUserStatistics.md
@@ -91,6 +91,8 @@ In on-premises Exchange, this example uses the Diagnostic parameter to display d
 
 The Identity parameter specifies the user that you want to retrieve migration information about. Use an email address as the value for this parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MigrationUserIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MobileDevice.md b/exchange/exchange-ps/ExchangePowerShell/Get-MobileDevice.md
index 0a6ffc561b..de79877a90 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MobileDevice.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MobileDevice.md
@@ -93,6 +93,8 @@ The Identity parameter specifies the mobile device that you want to view. You ca
 - Distinguished name (DN)
 - GUID (same as ExchangeObjectId)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MobileDeviceIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MobileDeviceMailboxPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-MobileDeviceMailboxPolicy.md
index 565645f4d4..f08078da16 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MobileDeviceMailboxPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MobileDeviceMailboxPolicy.md
@@ -56,6 +56,8 @@ This example returns the policy settings for the Mobile Device mailbox policy De
 
 The Identity parameter specifies the policy name.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MobileDeviceStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-MobileDeviceStatistics.md
index 5d6f6c1c20..a5313fe348 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MobileDeviceStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MobileDeviceStatistics.md
@@ -99,6 +99,8 @@ The Identity parameter specifies the mobile device that you want to view. You ca
 
 You can't use this parameter with the Mailbox parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MobileDeviceIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MonitoringItemHelp.md b/exchange/exchange-ps/ExchangePowerShell/Get-MonitoringItemHelp.md
index 0f30abca7c..45436becb6 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MonitoringItemHelp.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MonitoringItemHelp.md
@@ -46,6 +46,8 @@ This example retrieves health set information for a monitoring item on the serve
 
 The Identity parameter specifies the identity of the monitoring item. The parameter uses the syntax: `<HealthSet>\<MonitoringItemName>[\<TargetResource>]`. You can find the available values in the Identity property of the output of the Get-MonitoringItem cmdlet.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MonitoringItemIdentity.md b/exchange/exchange-ps/ExchangePowerShell/Get-MonitoringItemIdentity.md
index 5ed8bba101..4fb3cb2eb1 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MonitoringItemIdentity.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MonitoringItemIdentity.md
@@ -46,6 +46,8 @@ This example returns information about the health set named OutlookMapiHttp.Prox
 
 The Identity parameter specifies the health set that you want to view. To see the list of available health sets, you can use the Get-ServerHealth or Get-HealthReport cmdlets.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MoveRequest.md b/exchange/exchange-ps/ExchangePowerShell/Get-MoveRequest.md
index 7ecd1bd9a6..17ca7676b2 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MoveRequest.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MoveRequest.md
@@ -118,6 +118,8 @@ You can use this parameter with the following parameters:
 - SuspendWhenReadyToComplete
 - TargetDatabase
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MoveRequestIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MoveRequestStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-MoveRequestStatistics.md
index 818b63f0d8..23e885572b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MoveRequestStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MoveRequestStatistics.md
@@ -131,6 +131,8 @@ The Identity parameter specifies the identity of the mailbox or mail user. You c
 
 You can use this parameter with the MoveRequestQueue or MailboxGuid parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MoveRequestIdParameter
 Parameter Sets: IdentityOnPremises, IdentityCloud
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-MyAnalyticsFeatureConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-MyAnalyticsFeatureConfig.md
index aee28abf83..87432ea78a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-MyAnalyticsFeatureConfig.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-MyAnalyticsFeatureConfig.md
@@ -66,6 +66,8 @@ This example and the corresponding output shows the MyAnalytics configuration fo
 
 The Identity parameter specifies the user you want to view. You identify the user by their email address.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: String
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-NetworkConnectionInfo.md b/exchange/exchange-ps/ExchangePowerShell/Get-NetworkConnectionInfo.md
index b405db7a1f..64c3c4dd9f 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-NetworkConnectionInfo.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-NetworkConnectionInfo.md
@@ -62,6 +62,8 @@ The Identity parameter specifies the server you want to query. You can use any v
 
 If you don't use the Identity parameter, the command is run on the local server.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ServerIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-Notification.md b/exchange/exchange-ps/ExchangePowerShell/Get-Notification.md
index b960600134..a97502d71c 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-Notification.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-Notification.md
@@ -89,6 +89,8 @@ This example displays detailed information for the specified notification event.
 
 The Identity parameter specifies the notification event that you want to view. You identify the notification event by its AlternativeID property value (a GUID). You can find this value by running the command Get-Notification | Format-List DisplayName,AlternateID,StartTime,Status,Type.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: EwsStoreObjectIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OMEConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-OMEConfiguration.md
index a7361a7e95..74ae889b4a 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OMEConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OMEConfiguration.md
@@ -53,6 +53,8 @@ This example returns detailed information for all OME configurations in the orga
 
 The Identity parameter specifies the OME configuration that you want to get. The default OME configuration has the Identity value "OME Configuration".
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OMEConfigurationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OabVirtualDirectory.md b/exchange/exchange-ps/ExchangePowerShell/Get-OabVirtualDirectory.md
index 0411b0f962..1608cdda83 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OabVirtualDirectory.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OabVirtualDirectory.md
@@ -81,6 +81,8 @@ The Name value uses the syntax `"VirtualDirectoryName (WebsiteName)"` from the p
 
 You can't use the Identity and Server parameters in the same command.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: VirtualDirectoryIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OfflineAddressBook.md b/exchange/exchange-ps/ExchangePowerShell/Get-OfflineAddressBook.md
index b5c271b429..739ec69b5e 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OfflineAddressBook.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OfflineAddressBook.md
@@ -77,6 +77,8 @@ The Identity parameter specifies the OAB that you want to view. You can use any
 
 You can't use this parameter with the Server parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OfflineAddressBookIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OnPremisesOrganization.md b/exchange/exchange-ps/ExchangePowerShell/Get-OnPremisesOrganization.md
index bb8d46bbe8..8ba1d0d667 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OnPremisesOrganization.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OnPremisesOrganization.md
@@ -61,6 +61,8 @@ The Identity parameter specifies the identity of the on-premises organization ob
 - GUID
 - Name
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OnPremisesOrganizationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OnlineMeetingConfiguration.md b/exchange/exchange-ps/ExchangePowerShell/Get-OnlineMeetingConfiguration.md
index 4cec7f369b..e66222747b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OnlineMeetingConfiguration.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OnlineMeetingConfiguration.md
@@ -65,6 +65,8 @@ The Identity parameter specifies the mailbox that you want to view. You can use
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationRelationship.md b/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationRelationship.md
index 4c576ed8d4..cc195021b9 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationRelationship.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationRelationship.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the identity of the organizational relationship
 - GUID
 - Name
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OrganizationRelationshipIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationSegment.md b/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationSegment.md
index 3d309fe6b7..a32f80bb8f 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationSegment.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationSegment.md
@@ -65,6 +65,8 @@ The Identity parameter specifies the organization segment that you want to view.
 - Distinguished name (DN)
 - ExchangeObjectId (not the ExoSegmentId)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationalUnit.md b/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationalUnit.md
index 0ad6645a48..e535233487 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationalUnit.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OrganizationalUnit.md
@@ -80,6 +80,8 @@ The Identity parameter specifies the OU or domain that you want to view. You can
 
 You can use this parameter with the SearchText parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ExtendedOrganizationalUnitIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OutboundConnector.md b/exchange/exchange-ps/ExchangePowerShell/Get-OutboundConnector.md
index 882495a3e6..3946d53c36 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OutboundConnector.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OutboundConnector.md
@@ -55,6 +55,8 @@ The Identity parameter specifies the Outbound connector that you want to view. Y
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OutboundConnectorIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OutlookAnywhere.md b/exchange/exchange-ps/ExchangePowerShell/Get-OutlookAnywhere.md
index 84da3e4ffd..677e0249f6 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OutlookAnywhere.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OutlookAnywhere.md
@@ -74,6 +74,8 @@ The Name value uses the syntax `"VirtualDirectoryName (WebsiteName)"` from the p
 
 You can't use the Identity and Server parameters in the same command.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: VirtualDirectoryIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OutlookProtectionRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-OutlookProtectionRule.md
index dbe9cc5f7e..5b96a2142f 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OutlookProtectionRule.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OutlookProtectionRule.md
@@ -60,6 +60,8 @@ The Identity parameter is positional. When used after the cmdlet name, the param
 
 The Identity parameter identifies an Outlook protection rule.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OutlookProvider.md b/exchange/exchange-ps/ExchangePowerShell/Get-OutlookProvider.md
index 1c4402fee5..ce85c202bf 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OutlookProvider.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OutlookProvider.md
@@ -60,6 +60,8 @@ The Identity parameter specifies the ADIDParameter value of the MAPI protocol th
 - EXPR
 - WEB
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OutlookProviderIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OwaMailboxPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-OwaMailboxPolicy.md
index 835a172b5c..b603be2524 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OwaMailboxPolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OwaMailboxPolicy.md
@@ -65,6 +65,8 @@ The Identity parameter specifies the mailbox policy that you want to view. You c
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxPolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-OwaVirtualDirectory.md b/exchange/exchange-ps/ExchangePowerShell/Get-OwaVirtualDirectory.md
index 1595552983..9231c21f60 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-OwaVirtualDirectory.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-OwaVirtualDirectory.md
@@ -85,6 +85,8 @@ The Name value uses the syntax `"VirtualDirectoryName (WebsiteName)"` from the p
 
 You can't use the Identity and Server parameters in the same command.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: VirtualDirectoryIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PartnerApplication.md b/exchange/exchange-ps/ExchangePowerShell/Get-PartnerApplication.md
index 2c16113aca..cecbe84d9f 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PartnerApplication.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PartnerApplication.md
@@ -50,6 +50,8 @@ This example retrieves settings for all partner applications configured in Excha
 
 The Identity parameter specifies the identity of a partner application.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PartnerApplicationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PendingDelicenseUser.md b/exchange/exchange-ps/ExchangePowerShell/Get-PendingDelicenseUser.md
index ffc321eb50..957483f09f 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PendingDelicenseUser.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PendingDelicenseUser.md
@@ -79,6 +79,8 @@ You can use any value that uniquely identifies the mailbox. For example:
 
 You can't use this parameter with the ShowDueObjectsOnly switch.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RecipientIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PerimeterConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-PerimeterConfig.md
index 84bfae4905..909bf498fa 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PerimeterConfig.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PerimeterConfig.md
@@ -46,6 +46,8 @@ This example returns the list of gateway servers and internal email servers in y
 
 This parameter is reserved for internal Microsoft use.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OrganizationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PhishSimOverridePolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-PhishSimOverridePolicy.md
index d32e6822a1..4d1ea0c821 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PhishSimOverridePolicy.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PhishSimOverridePolicy.md
@@ -50,6 +50,8 @@ The Identity parameter specifies the phishing simulation override policy that yo
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-Place.md b/exchange/exchange-ps/ExchangePowerShell/Get-Place.md
index cd0df94272..4236dc9e81 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-Place.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-Place.md
@@ -82,6 +82,8 @@ The Identity parameter specifies the room mailbox that you want to view. You can
 
 You can't use this parameter with the Type parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: RecipientIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PolicyConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-PolicyConfig.md
index 56021327f8..d7941c3e05 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PolicyConfig.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PolicyConfig.md
@@ -45,6 +45,8 @@ This example returns the endpoint restrictions that are available in the organiz
 
 You don't need to use this parameter. The only endpoint restrictions object in the organization is named Settings.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: OrganizationIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PolicyTipConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-PolicyTipConfig.md
index fddb48a8f3..bf82779965 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PolicyTipConfig.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PolicyTipConfig.md
@@ -78,6 +78,8 @@ The Identity parameter specifies the custom Policy Tip you want to view. You can
 
 You can't use the Identity parameter with the Action, Locale or Original parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PolicyTipConfigIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PowerShellVirtualDirectory.md b/exchange/exchange-ps/ExchangePowerShell/Get-PowerShellVirtualDirectory.md
index 328b56bf0b..0ebf204af8 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PowerShellVirtualDirectory.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PowerShellVirtualDirectory.md
@@ -81,6 +81,8 @@ The Name value uses the syntax `"VirtualDirectoryName (WebsiteName)"` from the p
 
 You can't use the Identity and Server parameters in the same command.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: VirtualDirectoryIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ProtectionAlert.md b/exchange/exchange-ps/ExchangePowerShell/Get-ProtectionAlert.md
index 2085c02ebd..1ce3fbe12f 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-ProtectionAlert.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-ProtectionAlert.md
@@ -58,6 +58,8 @@ The Identity parameter specifies the alert policy that you want to view. You can
 - Distinguished name (DN)
 - GUID
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: ComplianceRuleIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolder.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolder.md
index 6c9add4dfd..c343d37fa2 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolder.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolder.md
@@ -124,6 +124,8 @@ This example returns the public folders that reside in the public folder content
 
 The Identity parameter specifies the name and path of the public folder you want to view. A valid value uses the syntax: `\Level1\Level2\...\LevenN\PublicFolder`. For example, `"\Customer Discussion"` or `"\Engineering\Customer Discussion"`.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PublicFolderIdParameter
 Parameter Sets: GetChildren, Recurse, Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderAdministrativePermission.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderAdministrativePermission.md
index b11d5b7b4e..0bd9786e2b 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderAdministrativePermission.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderAdministrativePermission.md
@@ -73,6 +73,8 @@ The Identity parameter specifies the GUID or public folder name that represents
 
 You can omit the parameter label so that only the public folder name or GUID is supplied.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PublicFolderIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderClientPermission.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderClientPermission.md
index 5eac0aa6f6..446f72e227 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderClientPermission.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderClientPermission.md
@@ -62,6 +62,8 @@ The Identity parameter specifies the GUID or public folder name that represents
 
 You can omit the parameter label so that only the public folder name or GUID is supplied.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PublicFolderIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderDatabase.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderDatabase.md
index 4f590bdc8e..7abd2fe238 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderDatabase.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderDatabase.md
@@ -87,6 +87,8 @@ You can't the Identity and Server parameters in the same command.
 
 If you have multiple databases with the same name, the cmdlet retrieves all databases with the same name in the specified scope.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: DatabaseIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderItemStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderItemStatistics.md
index cbc33d3800..6472732e57 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderItemStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderItemStatistics.md
@@ -70,6 +70,8 @@ This example exports the output of the Get-PublicFolderItemStatistics command to
 
 The Identity parameter specifies the GUID or public folder name that represents a specific public folder. You can also include the path using the following format: \\TopLevelPublicFolder\\PublicFolder
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PublicFolderIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxDiagnostics.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxDiagnostics.md
index e818298491..de21663645 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxDiagnostics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxDiagnostics.md
@@ -71,6 +71,8 @@ You can use any value that uniquely identifies the mailbox. For example:
 - SamAccountName
 - User ID or user principal name (UPN)
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: MailboxIdParameter
 Parameter Sets: (All)
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxMigrationRequest.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxMigrationRequest.md
index 2bf548c962..2f9a676b1d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxMigrationRequest.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxMigrationRequest.md
@@ -98,6 +98,8 @@ You can't use this parameter with the following parameters:
 - Suspend
 - Status
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PublicFolderMailboxMigrationRequestIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxMigrationRequestStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxMigrationRequestStatistics.md
index b2aa35b5b9..07d3d9e609 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxMigrationRequestStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMailboxMigrationRequestStatistics.md
@@ -83,6 +83,8 @@ The Identity parameter specifies the public folder mailbox migration request. Th
 
 You can't use this parameter with the RequestQueue and RequestGuid parameters.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PublicFolderMailboxMigrationRequestIdParameter
 Parameter Sets: IdentityOnPremises, IdentityCloud
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMigrationRequest.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMigrationRequest.md
index 39b9e08d9a..21a7946c01 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMigrationRequest.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMigrationRequest.md
@@ -77,6 +77,8 @@ The Identity parameter specifies the identity of the public folder migration req
 
 You can't use this parameter with other filtering parameters (BatchName, HighPriority, Name, RequestQueue, Status, or Suspend).
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PublicFolderMigrationRequestIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMigrationRequestStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMigrationRequestStatistics.md
index 500b1ab3dd..148a654d09 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMigrationRequestStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMigrationRequestStatistics.md
@@ -79,6 +79,8 @@ The Identity parameter specifies the migration request that you want to view. Yo
 
 You can't use this parameter with the RequestQueue or RequestGuid parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PublicFolderMigrationRequestIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMoveRequest.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMoveRequest.md
index 1c8e001ecc..8cda2cfa4d 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMoveRequest.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMoveRequest.md
@@ -79,6 +79,8 @@ You can't use this parameter with the following parameters:
 - Suspend
 - Status
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PublicFolderMoveRequestIdParameter
 Parameter Sets: Identity
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMoveRequestStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMoveRequestStatistics.md
index 69f5e45fee..8d76c64373 100644
--- a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMoveRequestStatistics.md
+++ b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderMoveRequestStatistics.md
@@ -76,6 +76,8 @@ The Identity parameter specifies the identity of the public folder move request.
 
 This parameter can't be used with the RequestQueue parameter.
 
+**Caution**: The value $null or a non-existent value for the Identity parameter returns *all* objects as if you ran the Get- command without the Identity parameter. Verify any lists of values for the Identity parameter are accurate and don't contain non-existent $null values.
+
 ```yaml
 Type: PublicFolderMoveRequestIdParameter
 Parameter Sets: Identity