Solution : https://service.sap.com/sap/support/notes/589066 (SAP Service marketplace login required)
Key words :
generate error message ki291 'network, network account assignment, account assignment interface, function module bapi_po_change, program error, network activity, account assignment, purchase order, terms bus2012, ekkn-nplnr
Related Notes :
| 1170946 | bapi_po_change: network activity code not taken over |
| 552598 | BAPI_PO_CREATE1: KI292 in account assignment |
| 494759 | BAPI_PO_CREATE1 and BAPI_PO_CHANGE: This is due to a redesig |