Parameter validation failed. It is not possible to provide valid values for all parameters

Question

I'm trying to test passing in parameter values from the URL.    I have RS 2008 .   I created an ultrasimple report based on a stored procedure output.  There is no validation, No available values, No default values.  
I'm trying to run the report like this:
/Reports/Pages/Report.aspx?ItemPath=%2fProduction%2fDBA+Reports%2fTest&iTest=1
I get:
Parameter validation failed. It is not possible to provide valid values for all parameters. (rsParameterError)
the one int parameter is iTestId 
The RS log file says the following:
processing!ReportServer_0-54!9138!01/25/2013-09:22:51:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: Parameter validation failed. It is not possible to provide valid values for all parameters., ;
  Info: Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: Parameter validation failed. It is not possible to provide valid values for all parameters.
What am I missing?

Answer 1

Hi F-ram,
From your description, you want to pass multiple parameters via URL, right? To pass multiple parameters through URL, we can use an ampersand (&) to separate them. For example, I have a report with two parameters p1 and p2. The report is deployed in a
folder on the Report Server. When I navigate to the report on the Report Server, I can see the report URL is http://localhost/ReportServer_SQL2008NEW/Pages/ReportViewer.aspx?%2fFolder%2fReport&rs:Command=Render.
If I need to pass parameters through URL, I can just add &p1=value1&p2=value2 at the end of the URL and the entire URL would be http://localhost/ReportServer_SQL2008NEW/Pages/ReportViewer.aspx?%2fFolder%2fReport&rs:Command=Render&p1=value1&p2=value2
If you have any questions, please feel free to ask.
Regards,
Charlie Liao
Charlie Liao
TechNet Community Support