I have eleven plant in company and every plant would like to have a identify number document but sap cannot config in plant level . I try to search Badi or User-exit for change the (MKPF-MBLNR & MSEG-MBLNR) before it insert into Table. I can't found that and MKPF-MBLNR & MSEG-MBLNR is Key table .i can't update table.
Anyone known Please tell me.