why these error is comming in crystal report in asp.net?The report you requested requires further information.

Question

why these error is comming in crystal report in asp.net
The report you requested requires further information.
 DSDiscount 
Server name:   
Database name:   
User name:   
Password:   
 Use Integrated Security  
  
Here DsDiscount means Dataset of Discount.
Actually my Data base in App_Data  .
In webconfig file Connection string like this:I no need to declare the username and password .

<add name="VRPL" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\VRPL.mdf;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient" />