I know most of the developers are interested to find out the source of the data on any report. It’s actually very simple.
Right-click on any report >> Add-Ins >> Cross-reference >> Using (instant view).
This complete cross-reference form will help us to identify the source of data in detail along with the report data source, Labels, Table fields etc.
The below screen shot details about the AccountantInvestmentAnlaysis report which comes from the source : OLAP
The same can be easily understood by expanding the Designs >> Role center
If we take SalesConfirm report: we can easily identify that the data that is getting rendered on to report is coming from SalesConfirmHeaderTmp and SalesConfirmDetailsTmp tables and from the fields in it.
The same can even be seen by expanding the designs >> Report >> Permissions >> Tables