Solution : https://service.sap.com/sap/support/notes/970326 (SAP Service marketplace login required)
Key words :
activate extension set ea-fs, extension set ea-fs, attached source code corrections, payment proposal run, fz message class, valid bank details, temporarily set, bank details, message number 108, assign invalid
Related Notes :
1027368 | BP_BNK: Incorrect posting in payment run |