Solution : https://service.sap.com/sap/support/notes/357211 (SAP Service marketplace login required)
Key words :
transaction se37 function module bapi_po_create, additional key words bapi_po_create, prerequisites interface parameter header_add_data_relevant, interface parameter header_add_data_relevant, enter additional data, menu goto -> documentation, import parameter po_header_add_data, bapi bapi_po_create, header data, purchase order
Related Notes :
| 372976 | BAPI_PO_CREATE1 not yet released officially |
| 307642 | BAPI_PO_CREATE copy header data extended |