User cannot access cubes due to DL group

When user attempts to access cubes it presents We couldn't get data from an external data source. Please try again later. If the problem persists, please contact the administrator for the external data source. Here is the error message that was returned from the Analysis Server

XML for Analysis parser: The CurrentCatalog XML/A property was not specified.

• Cubes

• Active directory

• DL group

The user's account for cubes is not assigned to the sites DL group

Please create a case with TSM Support for further assistance in the Support Portal.