processing answer, after a timeout, or whenever you are unsure whether a transfer happened.
Path Variable
Response
HTTP 200 is returned for any known transfer, including failed ones. Readdata.state to determine the outcome:
A 404 with MONEY_V2_TRANSFER_NOT_FOUND means no transfer with this reference was recorded, so it is safe to send it again. Right after a submit, there may be a brief window where an accepted transfer still reads as 404. Prefer retrying the original POST with the same reference and identical payload, which can never double-apply.
Polling
Poll with backoff (for example, 0.5 s, 1 s, 2 s, then every 5 s) untilstate is succeeded or failed. Honour Retry-After on 503.
Example Request
ReplaceREFERENCE with the reference sent with the original transfer.
cURL
