When a SSRS report is created a data source (DS) is used to create and test the report. This DS may not exist on your SSRS site therefore you will need to point it to a DS that does exist on your site. Use these steps to re-point the DS to an existing DS.
· Connect to your SSRS site
· Browse to the appropriate folder
· Click the report you want to change data source for
· Click the Properties tab
· Click the Data Sources link on the left

· Click the Browse button
· Expand Home | <Your SSRS folder name> until you find the shared data source you are looking for

· Select the data source
Note: {5C6358F2-4BB6-4a1b-A16E-8D96795D8602} is the default ConfigMgr data source
· Click OK (You might need to scroll down to see the OK button.)

· Click Apply button

· Click the View tab to ensure that that report works correctly.
