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I am adding a SQL Server Reporting Service Report Viewer Webpart onto a webpart page and i place a report generated using SSRS in the document library. I have two reports one with no parameter and one with user parameter.

The one without user parameter works fine on sharepoint webpart but when i try to add report the one with parameter to a report-viewer webpart i get the following issue

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, 'XML'. To use this data extension, it must be registered in the Web.config file of this Web application.

Refer the Image below. enter image description here

NOTE: The DatatSource connection is of type XML as i am using webservice to fetch the data.

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3 Answers 3

Reset to default
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This one is a simple one usually.

Remove reporting service and re-add it, this error is because it's config files are missing.

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  • Do you mean to say deactivate and reactivate Report Server Integration Feature and Reporting feature from Site collection features or is it something else. Please explain what i need to do as i had not configured Reporting Service, it was just there. Kindly help
    – Ishan
    Commented Nov 17, 2012 at 5:13
  • This was not the issue
    – Ishan
    Commented Nov 20, 2012 at 11:12
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add the report viewer assembly reference in the SharePoint web application web.config file C:\inetpub\wwwroot\SharePointWebApp\

<add key="CustomReportView" value="Extensions.Dashboard.CustomReportView, CustomReports,    Version=1.0.0.0, Culture=neutral, PublicKeyToken=c4b493225b1eafa7" />
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  • That did not work! still the same issue
    – Ishan
    Commented Nov 20, 2012 at 4:48
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The issue is not because of the Parameters, the issue is because the Data Source is of the type XML and in other case(working report) it was Sharepoint list.The issue was because the Reporting Service was in native mode should be configured in Integrated Mode.

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