Hi @Nagarjuna , as per the error, one possible reason could be that process is trying to insert/update a record which is a duplicate to existing record. So if you have database access, try to add 2 insert & update triggers to the table INTFACE_JOB_DETAIL_TAB table to capture the primary key columns (intface_name, line_no) and also to print the call stack (dbms_utility.format_call_stack) of the execution path.

Afterwards re-execute the background job, then you should get the trigger output. Based on that it should be possible to technically track down the root cause which is causing this issue.