wshttpbinding

I am attaching the wsdl file. I tried out few more things. I copied the request created by WCF Test client and used it in SOAP UI, This time I got a response but with error saying
"The message could not be processed. This is most likely because the action 'http://tempuri.org/IService1/AddTwoNumbers' is incorrect or because the message contains an invalid or expired security context token or because there is a mismatch between bindings. The security context token would be invalid if the service aborted the channel due to inactivity. To prevent the service from aborting idle sessions prematurely increase the Receive timeout on the service endpoint's binding.". I am not sure what I am doing is right or wrong? 

Thanks and Regards,
Kesav