Hi
I have the bellow query in data-config.xml, but it throws an error while running the delta query: "java.sql.SQLSyntaxErrorException: ORA-00918: column ambiguously defined". Full data import is running fine. Kindly suggest the changes required. <entity name="messages" pk="ERROR_MSG_PK" transformer='DateFormatTransformer' query="SELECT emsg.ERROR_MSG_PK,emsg.MESSAGE FROM exc_source_msg msg,exc_error_msg emsg where emsg.source='XYZ_TERMINAL' AND msg.source_system_enterprise_pk IN (SELECT sse.source_system_enterprise_pk FROM inf_source_system_enterprise sse WHERE sse.enterprise_id='ABC' ) and msg.error_msg_pk=emsg.error_msg_pk" deltaQuery="select emsg.ERROR_MSG_PK as ERROR_MSG_PK from exc_error_msg emsg,exc_source_msg msg where to_char(emsg.update_date,'YYYY-MM-DD HH24:MI:SS') > '${dataimporter.last_index_time}' " dataSource="db"> Thanking you, -Chandan