Has anyone done integration with the Web API and posting to a built-in action endpoint? I cannot seem to get it to work. No matter what combination I try, I keep getting Response Code 400 "Bad Request".
The Action endpoint I am trying to interact with is: DeliverPromoteEmail
The documentation says it is a bound action, so my URL looks like this: https://<ORGNAME>.api.crm3.dynamics.com/api/data/v8.1/emails/Microsoft.Dynamics.CRM.DeliverPromoteEmail
I am successfully talking to this endpoint doing reads and inserts with standard entities, but, I cannot get the Action to work.
Any input would be greatly appreciated.