MicrosoftDocs · Ruchika-mittal01 · Dec 9, 2025 · Dec 9, 2025 · Dec 9, 2025 · Dec 9, 2025
diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderStatistics.md b/exchange/exchange-ps/ExchangePowerShell/Get-PublicFolderStatistics.md
@@ -52,6 +52,8 @@ 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-QuarantineMessage.md b/exchange/exchange-ps/ExchangePowerShell/Get-QuarantineMessage.md
@@ -110,6 +110,8 @@ The Identity parameter specifies the quarantined message that you want to view.
 
 When you identify the quarantine message by using this parameter, the RecipientAddress, QuarantineUser, and ReleasedUser properties are available. To see these values, you need to use a formatting cmdlet. For example, `Get-QuarantineMessage -Identity <Identity> | Format-List`.
 
+**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: QuarantineMessageIdentity
 Parameter Sets: Details

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-QuarantineMessageHeader.md b/exchange/exchange-ps/ExchangePowerShell/Get-QuarantineMessageHeader.md
@@ -61,6 +61,8 @@ The Identity parameter specifies the quarantined message that you want to view t
 
 You can find the Identity value for a quarantined message by using the Get-QuarantineMessage 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: QuarantineMessageIdentity
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-QuarantinePolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-QuarantinePolicy.md
@@ -67,6 +67,8 @@ The Identity parameter specifies the quarantine policy 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: QuarantineTagIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-Queue.md b/exchange/exchange-ps/ExchangePowerShell/Get-Queue.md
@@ -93,6 +93,8 @@ This example lists only the external queues.
 
 The Identity parameter specifies the queue. Valid input for this parameter uses the syntax Server\\Queue or Queue, for example, Mailbox01\\contoso.com or Unreachable. For details about queue identity, see [Queue identity](https://learn.microsoft.com/Exchange/mail-flow/queues/queues-and-messages-in-powershell#queue-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: QueueIdentity
 Parameter Sets: Identity

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-RMSTemplate.md b/exchange/exchange-ps/ExchangePowerShell/Get-RMSTemplate.md
@@ -59,6 +59,8 @@ This example retrieves the Company Confidential RMS template.
 
 The Identity parameter specifies the name of the RMS 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: RmsTemplateIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ReceiveConnector.md b/exchange/exchange-ps/ExchangePowerShell/Get-ReceiveConnector.md
@@ -71,6 +71,8 @@ The Identity parameter specifies the Receive connector that you want to view. Yo
 
 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: ReceiveConnectorIdParameter
 Parameter Sets: Identity

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-Recipient.md b/exchange/exchange-ps/ExchangePowerShell/Get-Recipient.md
@@ -157,6 +157,8 @@ The Identity parameter specifies the recipient object that you want to view. You
 - 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: Identity

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-RecipientFilterConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-RecipientFilterConfig.md
@@ -47,6 +47,8 @@ This example returns detailed information about the recipient filter configurati
 
 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-RecipientPermission.md b/exchange/exchange-ps/ExchangePowerShell/Get-RecipientPermission.md
@@ -79,6 +79,8 @@ You can use any value that uniquely identifies the recipient. For example:
 - 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-RecoverableItems.md b/exchange/exchange-ps/ExchangePowerShell/Get-RecoverableItems.md
@@ -93,6 +93,8 @@ The Identity parameter specifies the mailbox that contains the deleted items tha
 
 In Exchange Online, you can specify multiple mailboxes separated by commas. If the values contain spaces or otherwise require quotation marks, use the following syntax: `"Value1","Value2",..."ValueN"`.
 
+**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: OnPremises, Cloud

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-RemoteDomain.md b/exchange/exchange-ps/ExchangePowerShell/Get-RemoteDomain.md
@@ -66,6 +66,8 @@ The Identity parameter specifies the remote domain that you want to view. 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: RemoteDomainIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-RemoteMailbox.md b/exchange/exchange-ps/ExchangePowerShell/Get-RemoteMailbox.md
@@ -100,6 +100,8 @@ The Identity parameter specifies the remote mailbox that you want to view. 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: RemoteMailboxIdParameter
 Parameter Sets: Identity

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ReportExecutionInstance.md b/exchange/exchange-ps/ExchangePowerShell/Get-ReportExecutionInstance.md
@@ -54,6 +54,8 @@ This example returns detailed information for the specified report execution ins
 
 The Identity parameter specifies the report execution instance that you want to view. The identity of the instance is a unique 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: InstanceIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ReportSubmissionPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-ReportSubmissionPolicy.md
@@ -49,6 +49,8 @@ This example returns the settings of the report submission policy in your organi
 
 The Identity parameter specifies the report submission policy that you want to view. The only available policy is named DefaultReportSubmissionPolicy.
 
+**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: ReportSubmissionPolicyIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-ReportSubmissionRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-ReportSubmissionRule.md
@@ -45,6 +45,8 @@ This example returns detailed information about the report submission rule in yo
 
 The Identity parameter specifies the report submission rule that you want to view. The default rule is named DefaultReportSubmissionRule.
 
+**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-ResourceConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-ResourceConfig.md
@@ -49,6 +49,8 @@ This parameter is available only in on-premises Exchange.
 
 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-ResubmitRequest.md b/exchange/exchange-ps/ExchangePowerShell/Get-ResubmitRequest.md
@@ -54,6 +54,8 @@ This example returns details about the resubmit request with the identity 1.
 
 The Identity parameter specifies the resubmit request you want to view. Each resubmit request is identified by an incremented integer 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: ResubmitRequestIdentityParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-RetentionCompliancePolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-RetentionCompliancePolicy.md
@@ -71,6 +71,8 @@ The Identity parameter specifies the retention 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-RetentionComplianceRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-RetentionComplianceRule.md
@@ -66,6 +66,8 @@ The Identity parameter specifies the retention 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-RetentionEvent.md b/exchange/exchange-ps/ExchangePowerShell/Get-RetentionEvent.md
@@ -55,6 +55,8 @@ This example returns detailed information about retention the specified retentio
 
 The Identity parameter specifies the retention event 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: EwsStoreObjectIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-RetentionPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-RetentionPolicy.md
@@ -49,6 +49,8 @@ This example returns all the properties of the retention policy RP Finance. The
 
 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-RetentionPolicyTag.md b/exchange/exchange-ps/ExchangePowerShell/Get-RetentionPolicyTag.md
@@ -89,6 +89,8 @@ This example returns all retention tags of Inbox and All types and pipes the res
 
 The Identity parameter specifies the name of the tag.
 
+**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: RetentionPolicyTagIdParameter
 Parameter Sets: Identity

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-RoleAssignmentPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-RoleAssignmentPolicy.md
@@ -69,6 +69,8 @@ For more information about pipelining and the Format-List cmdlet, see [About Pip
 
 The Identity parameter specifies the name of the assignment policy to view. If the 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: MailboxPolicyIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-RoleGroup.md b/exchange/exchange-ps/ExchangePowerShell/Get-RoleGroup.md
@@ -77,6 +77,8 @@ The Identity parameter specifies the role group to retrieve. If the name of the
 
 If the Identity parameter isn't specified, all role groups 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: RoleGroupIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-RoleGroupMember.md b/exchange/exchange-ps/ExchangePowerShell/Get-RoleGroupMember.md
@@ -58,6 +58,8 @@ This example retrieves a list of all the members of the Organization Administrat
 
 The Identity parameter specifies the role group for which member information should be retrieved. If the role group 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: RoleGroupMemberIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-RoutingGroupConnector.md b/exchange/exchange-ps/ExchangePowerShell/Get-RoutingGroupConnector.md
@@ -49,6 +49,8 @@ This example displays detailed configuration information for the routing group c
 
 The Identity parameter specifies the name or GUID of the routing group connector. The name is expressed as [[Administrative Group Name\\]Routing Group Name]\\Routing Group Connector Name. You can use the wildcard character (\*) as part of the administrative group or routing group 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: RoutingGroupConnectorIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-SafeAttachmentPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-SafeAttachmentPolicy.md
@@ -61,6 +61,8 @@ You can use any value that uniquely identifies the policy. For example:
 - 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: SafeAttachmentPolicyIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-SafeAttachmentRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-SafeAttachmentRule.md
@@ -62,6 +62,8 @@ You can use any value that uniquely identifies the rule. For example:
 - 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-SafeLinksPolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-SafeLinksPolicy.md
@@ -61,6 +61,8 @@ You can use any value that uniquely identifies the policy. For example:
 - 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: SafeLinksPolicyIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-SafeLinksRule.md b/exchange/exchange-ps/ExchangePowerShell/Get-SafeLinksRule.md
@@ -62,6 +62,8 @@ You can use any value that uniquely identifies the rule. For example:
 - 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-SearchDocumentFormat.md b/exchange/exchange-ps/ExchangePowerShell/Get-SearchDocumentFormat.md
@@ -56,6 +56,8 @@ This example retrieves all properties of the docx file format.
 
 The Identity parameter specifies the identity of a file format.
 
+**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: SearchDocumentFormatId
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-SecOpsOverridePolicy.md b/exchange/exchange-ps/ExchangePowerShell/Get-SecOpsOverridePolicy.md
@@ -52,6 +52,8 @@ The Identity parameter specifies the SecOps override policy that you want to mod
 - 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-SecurityPrincipal.md b/exchange/exchange-ps/ExchangePowerShell/Get-SecurityPrincipal.md
@@ -76,6 +76,8 @@ This example retrieves well-known security principals and displays only the Name
 
 The Identity parameter specifies the security principal. When the security principal is explicitly specified by using this parameter, no additional security principals 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: ExtendedSecurityPrincipalIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-SendConnector.md b/exchange/exchange-ps/ExchangePowerShell/Get-SendConnector.md
@@ -47,6 +47,8 @@ This example displays detailed information about the Send connector named Contos
 
 The Identity parameter specifies the name, or GUID of the Send connector. If the Identity name contains spaces, enclose the name in quotation marks ("). You can omit the Identity parameter label. You can also include the server name by using the format 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: SendConnectorIdParameter
 Parameter Sets: (All)

diff --git a/exchange/exchange-ps/ExchangePowerShell/Get-SenderFilterConfig.md b/exchange/exchange-ps/ExchangePowerShell/Get-SenderFilterConfig.md
@@ -47,6 +47,8 @@ This example returns detailed information about the Sender Filter configuration
 
 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-SensitiveInformationScan.md b/exchange/exchange-ps/ExchangePowerShell/Get-SensitiveInformationScan.md
@@ -60,6 +60,8 @@ The Identity parameter specifies the sensitive information scan 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)