Solution : https://service.sap.com/sap/support/notes/361830 (SAP Service marketplace login required)
Key words :
adjustment posting occurs, additional key words, attached source code, payment amount remains, payment clearing account, payment clearing, payment request, payment requests, sales order, billing plan
Related Notes :
528608 | Sales document with 'pure' down payment items (new) |
306151 | Sales document with "pure" down payment items (old) |
113347 | Down payment process. as of Release 4.0x (standard) |