Solution : https://service.sap.com/sap/support/notes/582252 (SAP Service marketplace login required)
Key words :
function module bapi_po_create1, enjoy po bapis, support package sapkh46c26, conditions tab page, header condition reason, header conditions, header condition, supply support, condition merging, small amount
Related Notes :
753694 | BAPI_PO_CREATE1 update termination for header conditions |
742408 | Error message when creating header conditions |
574460 | BAPI_PO_CREATE1: Externl purchase order numbr not transferrd |
439110 | Enjoy PO BAPI: Conditions |