Hi Rajesh,
I am sorry, I should have explained, how it has been solved.
I had problem at that time due to having * in party in configuration object (in ID) and not having that in URL. That * came when I used the wizard for configuring the ID objects. So I have maintained that * in my URL, after that it was resolved.
In your case there might be some minor issue like that should have causing the problem. Generate the WSDL file and test the same using SOAP UI and check if you are able to hit the PI or not.
For SOAP Sender URL, please refer SAP help.
http://help.sap.com/saphelp_nw73/helpdata/en/48/3555240bea31c3e10000000a42189d/frameset.htm
Thanks & Regards,
Venu V