Solution : https://service.sap.com/sap/support/notes/164436 (SAP Service marketplace login required)
Key words :
function module gn_invoice_create, additional key words, incorrect warning message, attached advance correction, create billing documents, manual document address, document address, billing document, -time customers, customer master
Related Notes :
| 166319 | RVAFSS00: incor. warning during partner processing |
| 122419 | You can enter OTA customers w/o document address |
| 67481 | General billing document interface - collective note |