Hi: one of our customers are having this exception randomly. We put in some re-try code and keep-alive code, yet it still happens. So I am looking at the SQL log our customer sent us. And I saw this. So basicaly, one of the report has no data in certain field. would that be the cause of that problem? library!ReportServer_0-15!150c!10/11/2010-11:50:22:: i INFO: RenderForNewSession('/CMSm5/PharmaPac_Live/Custom/Documents/Purchase Order.Pharma.2008') processing!ReportServer_0-15!150c!10/11/2010-11:50:23:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: There is no data for the field at position 9., ; Info: Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: There is no data for the field at position 9. webserver!ReportServer_0-15!62c!10/11/2010-11:50:23:: i INFO: Processed report. Report='/CMSm5/PharmaPac_Live/Custom/Documents/Purchase Order.Pharma.2008', Stream='' library!ReportServer_0-15!13ec!10/11/2010-11:50:50:: Call to GetReportParametersAction(/CMSm5/PharmaPac_Live/Custom/Documents/Purchase Order.Pharma.2008). library!ReportServer_0-15!13ec!10/11/2010-11:50:51:: i INFO: RenderForNewSession('/CMSm5/PharmaPac_Live/Custom/Documents/Purchase Order.Pharma.2008') processing!ReportServer_0-15!13ec!10/11/2010-11:50:51:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: There is no data for the field at position 9., ; Info: Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: There is no data for the field at position 9. library!ReportServer_0-15!13ec!10/11/2010-11:50:58:: Call to GetReportParametersAction(/CMSm5/PharmaPac_Live/Custom/Documents/Purchase Order.Pharma.2008). library!ReportServer_0-15!13ec!10/11/2010-11:50:59:: i INFO: RenderForNewSession('/CMSm5/PharmaPac_Live/Custom/Documents/Purchase Order.Pharma.2008') processing!ReportServer_0-15!13ec!10/11/2010-11:50:59:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: There is no data for the field at position 9., ; Info: Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: There is no data for the field at position 9.

Hi, Based on the error message, please check if the dataset field or report parameter missed values at that time. thanks, Jerry