Solution : https://service.sap.com/sap/support/notes/43067 (SAP Service marketplace login required)
Key words :
billing header field vbrk-kunag, create credit memo requests, vbrk-kunag = vbrk-kunrg, additional key words billing, document header level, billing document header, header partner procedure, data transport routine, billing document item, billing due list
Related Notes :
| 111813 | Billing doc: Collective run differs from individual creation |
| 61866 | VF04 : Invoice split due to billing type |
| 25147 | VF04 : Selection by payer |