To find the data source from SSRS
• In the AOT, expand the SSRS Reports node, expand the Reports node, right-click the report for which you want to find the data source, click Add-ins, click Cross-reference, and then click Using (instant view). The data source for the report will display in the Complete cross-reference for the selected nodes form.
To find the report that is using a data source from table
• In the AOT, right-click the data source. For example, in the Data Dictionary > Tables node, right-click the CustTable table, click Add-ins, click Cross-reference, and then click Used By. The reports that use the CustTable table as a data source display.