Solution : https://service.sap.com/sap/support/notes/458171 (SAP Service marketplace login required)
Key words :
invoice-related billing documents, start transaction se51, sapmv60a screen number, credit memo request, terms credit memo, debit memo request, field vbrp-augru_auft, vbrp-augru_auft reason, credit memo, billing document
Related Notes :
| 391530 | Invoice-related billing documents and their cancellation |