WSDL Policy references in WSDL FILE

Hi Folks ,

I am working on PI 7.3 ( Web service to Proxy scenario )

I have generated a WSDl file from my integrated configuration object to give it to sender system personell

In that WSDL file I see references of WSDL POLICY due to which the client is not able to upload that in his landscape

If I remove those policy references , he is able to upload the WSDL and do his coding to be able to hit PI system

Does this policy refrences absolutely necessary ?

If I remove them does it have some implication going forward ?

xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy"

xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd"

xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">

<wsdl:documentation/>

<wsp:UsingPolicy wsdl:required="true"/>

<wsp:Policy wsu:Id="OP_xyz_Async"/>

Please Guide

Thanks

Ninad Sane