Fix IBAN invalid format
IBAN must match the country-specific format and pass the mod-97 checksum. Invalid length, characters, or checksum cause rejection.
Common causes
- Wrong length for country (e.g. DE 22, GB 22).
- Invalid characters (letters in check digits).
- Mod-97 checksum fail.
How to fix
- Check country IBAN format (length, structure).
- Validate checksum with IBAN Validator.
- Ensure no spaces or extra characters.
Use our tool
Validate IBAN