Solution : https://service.sap.com/sap/support/notes/520990 (SAP Service marketplace login required)
Key words :
warning message 'original system set, manual advance correction proceed, attached source code correction, standard transaction variant allowed, clearing exchange rate differences, prerequisites parallel currency areas, changing exchange rates, varying exchange rates, afaplv_t093a_04-afapl reason, development class enter
Related Notes :
611586 | AK005 for adjustment postings on AuC |
158953 | Settlement in parallel currency not the same as FI debit |
35309 | Final settlment inv. measure: AA341, AW605 for down payments |