Solution : https://service.sap.com/sap/support/notes/350993 (SAP Service marketplace login required)
Key words :
export parameter type spec, additional key words, billing type 'p', function module sd_downpayment_request_read, function group v60c, ref short texte_awref, payment requests created, payment request note, payment requests, function builder
Related Notes :
| 528608 | Sales document with 'pure' down payment items (new) |
| 306151 | Sales document with "pure" down payment items (old) |
| 182417 | Incor. clearing of down payments from Release 3.x |
| 113347 | Down payment process. as of Release 4.0x (standard) |