Solution : https://service.sap.com/sap/support/notes/170679 (SAP Service marketplace login required)
Key words :
additional key words, attached advance corrections, current exchange rate, billing split occurs, payment clearing item, payment clearing, billing split, invoice split, exchange rates, accounting rate
Related Notes :
164422 | Billing item t.b. cleared with fixed exch. rate |
150893 | Down payment clearing with separate exchange rate |
113347 | Down payment process. as of Release 4.0x (standard) |