An error occurred during local report processing. An error has occurred during report processing. An attempt has been made to use an unregistered data extension, 'SQL'. To use this data extension, it must be registered in the Web.config file of this Web application.

Hi Hussain, Have you updated your Reporting Services instance? If you have a pre-SQL Server 2008 report server instance and you install or upgrade to the SQL Server 2008 Reporting Services Add-in for SharePoint Technologies, you will receive this error message. As SharePoint had kept hold of an old (deleted) Reporting Services installation, which had no configuration files. Please removed the Reporting Services Add-on and reinstalled it. At the same time, please reconfigure the Reporting Services on SharePoint administration site. For more information, please refer to this link http://andynoon.wordpress.com/2011/01/19/sharepoint-2010-reporting-services-woes/ Thanks, Challen FuChallen Fu [MSFT] MSDN Community Support | Feedback to us Get or Request Code Sample from Microsoft Please remember to mark the replies as answers if they help and unmark them if they provide no help.