Hi Sriram - What this parameter has got to do with the question?
@Zubyr : You just need to import the wsdl as external definition and create the service interface as synchronous.
It is like any other interface..
Have a look at the below blog for reference :
http://****************/Tutorials/XI/RFCtoSOAP/page1.htm
in 7.3 you can create integrated configurations (ICo) instead of configuration scenario
Btw what is your sender?