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Microsoft.Reporting.WebForms.ReportServerException: This report requires a default or user-defined value for the report parameter 'DataYears'. To run or subscribe to this report, you must provide a parameter value. (rsReportParameterValueNotSet) at Microsoft.Reporting.WebForms.ServerReportSoapProxy.OnSoapException(SoapException e) at Microsoft.Reporting.WebForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.ProxyMethodInvocation.Execute[TReturn](RSExecutionConnection connection, ProxyMethod`1 initialMethod, ProxyMethod`1 retryMethod) at Microsoft.Reporting.WebForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.Render(String Format, String DeviceInfo, PageCountMode PaginationMode, String& Extension, String& MimeType, String& Encoding, Warning[]& Warnings, String[]& StreamIds) at Microsoft.Reporting.WebForms.ServerReport.Render(String format, String deviceInfo, PageCountMode pageCountMode, String& mimeType, String& encoding, String& fileNameExtension, String[]& streams, Warning[]& warnings) at CE_Courses.Report_Viewer.LoadReport(String strReport)

  • The 'DataYears' parameter is missing a value