I built a workflow that calls a POST endpoint meant to change the state of a row.

This “works” but it only updates rowstate (not objstate) and throws the following error at the web client:

The Error is strange because it seems to reference the objstate when the “Release()” function only updates the other one.
I also tried the same idea using the main record and PurchaseRequisition_Release():Void with the same result and error message.
Any help would be greatly appreciated.