You didnt mentioned any SUM on the column in analytic view. And i think the feature not supported message is coming for select on analytic view.
Without aggregation you cannot have select statement on analytic view.
Something like this:
service
{
"SAP_BW::AN_BW" as "Analyticalview" keys generate local "GENERATED_ID" aggregates always (SUM of "MEASURE");
}
Regards,
Krishna Tangudu