Solution : https://service.sap.com/sap/support/notes/763791 (SAP Service marketplace login required)
Key words :
symptom table order_item_in, include element lprio, dependent structure vbapkom, terms lprio, table extensionin, structure vbapkoz, delivery priority, extension method, error occurs, dlv_prio reason
Related Notes :
143580 | Information on SD BAPIs and customer enhancement concept |