Cause

IBAN failed validation (format, checksum, or country rules).

Partner action

Send a valid IBAN for the beneficiary bank account. Use uppercase, no spaces.

Gando action (internal)

Check beneficiary-bank-account Zod validation and IBAN normalisation.

Example response

{
  "error": {
    "code": "invalid_iban",
    "message": "Invalid IBAN",
    "requestId": "req_abc123"
  }
}