Objects in ID (SOAP to Proxy scenario)

Hi,

I have a scenario: (third-party) SOAP --> PI 7.1 -->(SAP) ABAP Proxy

In integration directory I create:

- a communication component

- a communication channel for SOAP (webservice)

- a sender agreement (here i got the wsdl for the webservice)

- a receiver determination and

- an interface detremination

Do I need for the proxy a receiver aggreement an a comunication channel?

Thanx