Updating limitations based on CSS feedback.

https://dev.azure.com/Data-AI-Supportability/Supportability/_workitems/edit/2863

Author: ramakoni1

articles/sql-database/sql-database-sync-data.md

@@ -128,6 +128,7 @@ Provisioning and deprovisioning during sync group creation, update, and deletion
 - Azure Active Directory authentication isn't supported.
 - Tables with same name but different schema (for example, dbo.customers and sales.customers) aren't supported.
 - Columns with User Defined Data Types aren't supported
+- Moving servers between different subscriptions is not supported. 
 
 #### Unsupported data types