the god damn it msg is always like this: Error details Error code 2200 Troubleshooting guide Failure type User configuration issue Details ErrorCode=SqlOperationFailed,'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message=A database operation failed. Please search error to get more details.,Source=Microsoft.DataTransfer.ClientLibrary,''Type=System.InvalidOperationException,Message=The given value of type String from the data source cannot be converted to type nvarchar of the specified target column.,Source=System.Data,''Type=System.InvalidOperationException,Message=String or binary data would be truncated.,Source=System.Data,' Source Pipeline CopyPipeline_XXXXXX Obviously there error in it ,I've konwn this. So please tell me which column caused this OK? Which column got a string that can't be converted? For god sake would you please give a hint, cause there are so many columns got a string type, I just can't check it one by one .