'Feature not supported: SELECT statement with .groupBy'

I am trying to call a remote service on CAP with following path v2/PlanningData/TSINH1?$filter=UOMTOID eq 'EA'&$format=json⊤=100&$select=PRDID,CUSTID,CONSENSUSDEMAND,UOMTOID,VERSIONID,SCENARIOID,ID,PERIODID4_TSTAMP

and getting the response as 'Feature not supported: SELECT statement with .groupBy'

Oliver Klemenz

Sebastian Van Syckel