Solution : https://service.sap.com/sap/support/notes/80145 (SAP Service marketplace login required)
Key words :
assignment table nlaz maintained correctly, exclude duplicate account assignment lines, additional key words nc01, field test mode selection, duplicate account assignment items, duplicate account assignment lines, account assignment rules, analyzing table nlco, duplicate account assignments, matchcode object mnle
Related Notes :
88398 | IS-H:Too many cancel. mult. acc. assign. RNHCO000 |