Solution : https://service.sap.com/sap/support/notes/1319718 (SAP Service marketplace login required)
Key words :
create rebate credit memos, general billing interface, external billing interface, number range reason, enhanced rebate settlement, billing document creation, settled rebate agreement, document flow determination, rebate agreement, billing documents
Related Notes :
| 335136 | Billing interface: Reference document number |
| 115184 | Billing interface: Billing doc. w/ reference to external no. |