...
When calling the webhook endpoint, it is by default always returning 200 OK without any result in the body and the final result value may or may not be in the response JSON (depending on whether the background process takes longer than the request process). If the caller client supports redirects, you can set the parameter pollingRedirectEnabled to true on the webhook call:
...
In this case the webhook endpoint will return a redirect to the /api/v3/result endpoint and will use the polling approach as described above. It will do as many redirects as required and return with the final result when finished. So there is no extra work on client side necessary.
You can also set the request parameter pollingRedirectEnabledon the /api/v3/result endpoint to stop or start the auto-redirect for polling at any time:
...