Solution : https://service.sap.com/sap/support/notes/498862 (SAP Service marketplace login required)
Key words :
system generates runtime errorcall_function_not_found, attached source code corrections, execute report rffo, support package sapkh40b63, iban advance implementation, terms iban, implemented note 443424, rffoat_a reason, function module, initially delivered
Related Notes :
443424 | Use of IBAN in Rel. 3.1I /advance implementatn in Rel. 4.X |