Solution : https://service.sap.com/sap/support/notes/721984 (SAP Service marketplace login required)
Key words :
function module bapi_po_change, program error due, program correction, purchase order, structure poitem, existing poitem, terms purchaseorder, solution implement, structure poschedule, poschedule reason
Related Notes :
| 608863 | BAPI_PO_CHANGE: Delivery date not changed |