Hello Sheikh,
First marked the customer for deletion in the master data.
If the customer transaction data exists under co. code level it is not possible to delete the customer master data in OBR2. First check the delete customers tab, enter customer no, select with general master data for co. code level then give the co. code number. After that run this data in test mode. one it is successsful so pls go ahead to do this in PROD environment.
Thanks & Regards,
Lakshmi S