Configuration for Reporting Services in Sharepoint Integrated Mode
  1. Create a new folder in a Document Library on your Sharepoint Intergrated Mode Reporting Services server.
  2. Upload the unzipped RDL files to the new folder.
  3. Click the document dropdown of one of the files and select Manage Data Sources.

  4. Under the Name column, click the link to the data source.

  5. Custom data source should be already selected in the Connection Type.
  6. Scroll down to the Credentials section at the bottom of the page. Select the radio button next to Unattended report processing account and click OK. Then click Close.

  7. Repeat steps 3-6 above for any other files.