I am adding a new file in Standard tcode ME21n. The field is Service Line Item Details level, Go to Service Tab, Select one Line Item and click on Account assignment Button at bottom,Here, I want to add a New field Sub Operation (AFVGD-UVORN) beside Network, Activity fields. Please let me knwo the procedure.
I have searched one BADI "ME_PROCESS_PO_CUST" and added a field in the strcture but the it is not appearing in the screen.
I have also used User exit "EXIT_SAPLKACB_001" but than also field is not appearing in the screen.