Im trying to join Declarative Index with normal Class in report definition. There is no issue in final out comes. I mean it will fetch relevant records to the Report. but issue is, OOTB filter is not working. When we trying to select Value from "Select Value" button,It will not returned any existing values. I traced this scenario and its showing below error in tracer.
"Unable to process filter name for filter: " + 'SCRRESINDX.ResultID' "
The only previous case I can find that is similar to yours has an unexplained root cause.
Please try the following:
1) Re-save the report definition.
2) If that does not work, swap the positions of the SCRRESINDX.ResultID and MapRESSINGLE.ResultID in the filter conditions for the join. This should not make any difference, but it fixed the prior case.