I have created 3 sub reports which have 2 parameters as string data type and 2 parameters as date time datatype .Then i created a main report with parameter as string through which I can select which subreport  I need to preview.When Processing I got an error as

 [rsErrorExecutingSubreport] An error occurred while executing the subreport ‘subreport1’: The value provided for the report parameter 'Begin' is not valid for its type. 

Begin has date time data type.

Any help hoe to solve this issue is highly appreciated.

thanks in advance,

sasi 

Veridy where you are passing correct value.

 OR

You may have passing NULL but parameter may not be configured for NULL