transactionId (returned when the withdrawal was created via the API) or externalId (available for every withdrawal, e.g. in Get Balance History). If both are provided, transactionId takes precedence and externalId is ignored.curl --location 'http://k8s-partnera-partnera-7873f15634-69ebb7c047cac3d1.elb.eu-central-1.amazonaws.com/v1/sepa-withdrawal/details?transactionId=29d21864-3f9f-4d07-966e-4d40c2a24c21' \
--header 'x-api-key: <api-key>'{
"type": "WITHDRAWAL",
"transactionId": "29d21864-3f9f-4d07-966e-4d40c2a24c21",
"externalId": "8cb5745f-0e65-4323-891c-f1992423c982",
"balanceId": "ea93abc7-389d-4bd6-aeff-2257bfa72683",
"status": "SUCCESSFUL",
"amount": "9",
"currency": "EUR",
"accountHolder": "Acme Corp",
"iban": "DE89370400440532013000",
"swift": "COBADEFFXXX",
"bankName": "Commerzbank",
"title": "Invoice 2026/10/015",
"fee": "1",
"totalAmount": "10",
"createdAt": "2026-10-08T12:57:54.839Z",
"updatedAt": "2026-10-08T14:21:07.412Z"
}