Transport request migration failed with return code 12

Hi ,

A transport request was created to capture deletion of bex query via Tcode RSZDELETE. The deletion TR was moved to Quality box successfully and query got deleted. But when same TR was moved to Production box, TR failed with return code 12. Program terminated (job:RDDEXECL). Upon checking the job log overview for this job, runtime error ITAB_DUPLICATE_KEY happend causing session to terminate. can anyone pls suggest me how to fix this issue and why this has caused. Need to fix this immediately as it is in production environment. Please help.

In ST22 i could see the below error details:

Thanks,
Vishnu