SAP systems consume .net Web service

Hi,
I have created a webservice in .net and deployed on server. I tested the
webservice using windows client it's working fine. My webservice going to
consume by SAP client.
>
1.Will SAP systems create Proxy to get the webservice methods?
when i was tested webservice with .net client i got an error saying HTTP
404
Proxy authentication....(ISA SErver..) and i solved using WebProxy object.
>
Now my questions is will same error occur for SAP Systems too?

Hi,
I have created a webservice in .net and deployed on server. I tested the
webservice using windows client it's working fine. My webservice going to
consume by SAP client.
>
1.Will SAP systems create Proxy to get the webservice methods?
when i was tested webservice with .net client i got an error saying HTTP 404
Proxy authentication....(ISA SErver..) and i solved using WebProxy object.
>
Now my questions is will same error occur for SAP Systems too?