Solution : https://service.sap.com/sap/support/notes/850932 (SAP Service marketplace login required)
Key words :
schedule line level, account assignment level, purchase order item, item level, deletion indicator, simultaneously change, entire document, quantity reason, program error, solution implement
Related Notes :
| 938653 | BAPI_PO_CREATE1: Creation of locked item |
| 698686 | BAPI_PO_CHANGE: Error 06 070 deleting an item |