Solution : https://service.sap.com/sap/support/notes/502658 (SAP Service marketplace login required)
Key words :
generate credit/debit memos, attached source code corrections, preceding sd document, field vbrp-uepos, vgtyp billing document, billing document reason, 'create billing document, billing document function', billing document, document category
Related Notes :
| 883995 | Higher-level item number in billing document (9) |
| 447548 | Superior item number in the billing document (8) |
| 137979 | Superior item number in billing document (6) |
| 113924 | Higher-level item number in billing document (5) |