Solution : https://service.sap.com/sap/support/notes/163231 (SAP Service marketplace login required)
Key words :
category additional key words mm po me21, prerequisites program error solution program correction, additional item, stock category, purchase order, thenew item, referenced item, incorrect copy, theninsert
Related Notes :
168887 | AFS V1.0D2 Fixpack #5 including HP/LCP 27-31 |