Solution : https://service.sap.com/sap/support/notes/1246803 (SAP Service marketplace login required)
Key words :
unexpected lost cash discount, cash discount percentage rates, vendor net procedure reason, cash discount rate, cash discount days, vendor line item, fields accountpayable-dsct_, system automatically adds, subsequent payment run, payment accountpayable-pmnttrms
Related Notes :
444543 | Subseq functions for cash discount calcul in net procedure |