We use the following endpoint:
to force a schedule on DSS REST API.
We have noticed that no response comes back after 30 seconds. For long running requests we would expect a response with a HTTP StatusCode of 202 Accepted and a "monitor" url in the Location header to come back after that time.
We do not provide the Prefer header.
The call made before ScheduleExtractNow - RequestToken is successful.
I can provide ClientSessionId if required?