Using ES workplace interfaces in PI

Hi All,

I want to use ES workplace publishsed interfaces to createcustomer in out SAP DEV backend.I have following questions to understand how to use it:

(1) PI can use normal SOAP receiver to send the request to backend after importing the publised WSDL.

(2) The backend SAP system should have an implementation of the same

(3) Can I change the WSDL implementation in backend to suit my requirement

I am asking these becase it ES workplace,it always talk about SAP backened hosted by SAP,so was thinking if we can actually use it in DEV and PROD environment.

As disucssed in my previous question,we are looking at best option to invoke Synchronous interfaces to SAP Backend ie Services,proxy,IDOC or RFC.

Regards,

Premjit