diff --git a/workers/loc.api/errors/index.js b/workers/loc.api/errors/index.js
index 07abb655..0a42b738 100644
--- a/workers/loc.api/errors/index.js
+++ b/workers/loc.api/errors/index.js
@@ -71,8 +71,8 @@ class ObjectMappingError extends BaseError {
 }
 
 class CurrencyConversionDataFindingError extends BaseError {
-  constructor (message = 'ERR_DATA_IS_NOT_FOUND_TO_CONVERT_CURRENCY') {
-    super(message)
+  constructor (data, message = 'ERR_DATA_IS_NOT_FOUND_TO_CONVERT_CURRENCY') {
+    super({ data, message })
   }
 }
 
diff --git a/workers/loc.api/sync/currency.converter/index.js b/workers/loc.api/sync/currency.converter/index.js
index 0ae43616..3c671e1f 100644
--- a/workers/loc.api/sync/currency.converter/index.js
+++ b/workers/loc.api/sync/currency.converter/index.js
@@ -348,17 +348,25 @@ class CurrencyConverter {
     if (typeof symbol !== 'string') {
       return ''
     }
-    if (symbol.length < 8) {
+    if (symbol.length < 6) {
       return symbol
     }
+
+    const hasFlag = (
+      symbol.startsWith('t') ||
+      symbol.startsWith('f')
+    )
+    const flag = hasFlag
+      ? symbol[0]
+      : 't'
+
     if (
-      symbol[0] !== 't' &&
-      symbol[0] !== 'f'
+      symbol.length === 7 &&
+      hasFlag
     ) {
       return symbol
     }
 
-    const flag = symbol[0]
     const [firstSymb, lastSymb] = splitSymbolPairs(symbol)
     const _firstSymb = this._getConvertingSymb(firstSymb)
     const _lastSymb = this._getConvertingSymb(lastSymb)
@@ -1031,7 +1039,9 @@ class CurrencyConverter {
       )
 
       if (!Number.isFinite(price)) {
-        throw new CurrencyConversionDataFindingError()
+        throw new CurrencyConversionDataFindingError(
+          { symbol: reqSymb, mts }
+        )
       }
 
       return price
@@ -1082,7 +1092,9 @@ class CurrencyConverter {
       )
     }
 
-    throw new CurrencyConversionDataFindingError()
+    throw new CurrencyConversionDataFindingError(
+      { symbol: reqSymb, mts: end }
+    )
   }
 
   async convertManyByCandles (data, convSchema) {