Solution : https://service.sap.com/sap/support/notes/662716 (SAP Service marketplace login required)
Key words :
attached source code corrections, function module bapi_po_change, eket-menge reason, external delivery date, schedule line quantity, purchase order item, delivery date, schedule line, purchase order, mepo1320-menge
Related Notes :
| 791130 | BAPI_PO_CHANGE: Deletion indicator |
| 637467 | ME_PROCESS_PO_CUST: Endless loop due to field change |
| 628141 | BADI ME_PROCESS_PO_CUST ends in endless loop |
| 608863 | BAPI_PO_CHANGE: Delivery date not changed |