Solution : https://service.sap.com/sap/support/notes/529355 (SAP Service marketplace login required)
Key words : 
electronic bank statement, line item file, error message fb080, error fb080, file incorrectly, fb080 reason, format multicash, payee field, system imports, terms rfebka00
Related Notes : 
       
| 36833 | Multicash Format (auszug.txt and umsatz.txt) |