invalid_redirect_url

`return_url` or `cancel_url` is not a valid absolute URL.

HTTP status400
Error typeinvalid_request_error
RetryNo. Fix the request.

Response shape

{
  "error": {
    "type": "invalid_request_error",
    "code": "invalid_redirect_url",
    "message": "…",
    "doc_url": "https://docs.borga.is/errors/invalid_redirect_url",
    "request_id": "req_…"
  }
}

See all error codes and how to handle them.