Solution : https://service.sap.com/sap/support/notes/1170946 (SAP Service marketplace login required)
Key words :
terms nplnr aplzl aufpl vornr account assignment reason, change network activity code, network activity code, release 600 onwards due, function group mepo, existing purchase order, purchase oder, accounting data, error message, longer valid
Related Notes :
| 589066 | BAPI_PO_CHANGE: Incorrect account assignment to network |