Error:
The report definition is not valid. Details: The report definition has an invalid target namespace 'http://schemas.microsoft.com/sqlserver/reporting/2008/01/reportdefinition' which cannot be upgraded. (rsInvalidReportDefinition) Get Online Help
You can not deploy sql server 2008 report (rdl) into sql server 2005 report server because RDL namespace are different for each version.
The report definition is not valid. Details: The report definition has an invalid target namespace 'http://schemas.microsoft.com/sqlserver/reporting/2008/01/reportdefinition' which cannot be upgraded. (rsInvalidReportDefinition) Get Online Help
You can not deploy sql server 2008 report (rdl) into sql server 2005 report server because RDL namespace are different for each version.