...
OLAP REST API exposes sets of endpoints in GET and POST method. OLAP REST API exposes set of endpoints in GET and POST method. AdhocReport AdhocReport is the endpoint that endpoint that allows the user to run the OLAP reports by overriding the mentioned parameters. Both POST and GET
...
methods support the adhocReport endpoint.
Payload parameters supported in the POST method are not all supported in the GET Method. For more information on the POST vs GET method of adhocReport, see the page ‘OLAP REST API POST Vs. GET
...