Creating SSRS Report Using SharePoint Business Connectivity Service BCS

Hi Folks,

I've been trying to run a report but having the following error;

Attempted to perform an unauthorized operation.
----------------------------
Query execution failed for dataset 'DataSet1'. (rsErrorExecutingCommand)
----------------------------
An error has occurred during report processing. (rsProcessingAborted)

It sounds like permission issue but the things is how I can run the query in query designer? and if I change List created from BCS to any other list (Not BCS) report runs flawlessly.

I can't figure out what could be the problem.

Hope to get any help.

Thanks

 
Thanks, Kashif