Solution : https://service.sap.com/sap/support/notes/495675 (SAP Service marketplace login required)
Key words :
generates error message f2106 'enter, required entry fields, source code corrections, current support package, support package, customer area, bank details, transactions obd2, general data, payment transactions
Related Notes :
| 675187 | FB01: IBAN entry w/ required entry field bank det. not poss. |
| 392091 | IBAN: Use for vendors and customers |