CreateBankingTransferRequest

{
    "name": "Juan",
    "surname": "Pérez García",
    "concept": "Invoice 2026-0042",
    "amount": 150.5,
    "from_iban": "ES7620770024003102575766",
    "iban": "ES9121000418450200051332",
    "external_id": "partner-tx-20260807-001",
    "currency": "eur"
}