addressed PM inputs

Author: AbhishekMallick-MS

articles/backup/backup-azure-database-postgresql-flex-troubleshoot.md

@@ -18,6 +18,8 @@ This article provides the recommended actions to troubleshoot the issues you mig
 
 **Error code**: PostgreSQLFlexOperationFailedUserError 
 
+**Inner error code**: `ServerNotReadyForLongTermBackup`
+
 **Cause**: Resource isn't in a valid state to perform the backup operation. 
 
 **Recommended action**: Validate if the PostgreSQL - Flexible server has the following properties in its resource JSON script: `"state": "Ready"`. If not present, wait for the state to change or fix the PostgreSQL - Flexible server properties to make it ready for backup. 
@@ -26,6 +28,8 @@ This article provides the recommended actions to troubleshoot the issues you mig
 
 **Error code**: PostgreSQLFlexOperationFailedUserError 
 
+**Inner error code**: `ResourceGroupNotFound`
+
 **Cause**: Resource group isn't found.
 
 **Recommended action**: Stop protection for the backup instance to avoid failures. 
@@ -34,6 +38,8 @@ This article provides the recommended actions to troubleshoot the issues you mig
 
 **Error code**: PostgreSQLFlexOperationFailedUserError 
 
+**Inner error code**: `ResourceNotFound`
+
 **Cause**: Resource isn't found.
 
 **Recommended action**: Stop protection for the backup instance to avoid failures. 
@@ -42,6 +48,8 @@ This article provides the recommended actions to troubleshoot the issues you mig
 
 **Error code**: PostgreSQLFlexOperationFailedUserError 
 
+**Inner error code**: `AuthorizationFailed`
+
 **Cause**: Required permissions aren't present to perform the backup operation. 
 
 **Recommended action**: Assign the [appropriate permissions](backup-azure-database-postgresql-flex-overview.md#permissions-for-backup) and retrigger the backup operation. 
@@ -50,6 +58,8 @@ This article provides the recommended actions to troubleshoot the issues you mig
 
 **Error code**: UserErrorMaxConcurrentOperationLimitReached 
 
+**Inner error code**: `UserErrorMaxConcurrentOperationLimitReached`
+
 **Cause**: Limit to the number of backups that can be performed on a backup instance has reached to maximum.
 
 **Recommended action**: Try to trigger a backup operation once the current backup job is complete. 
@@ -58,6 +68,8 @@ This article provides the recommended actions to troubleshoot the issues you mig
 
 **Error code**: UserErrorMSIMissingPermissions 
 
+**Inner error code**: `UserErrorMSIMissingPermissions`
+
 **Cause**: The required set of permissions aren't present to perform the restore operation.
 
 **Recommended action**: Assign the [appropriate permissions](backup-azure-database-postgresql-flex-overview.md#permissions-for-backup) and retrigger the backup operation.