While trying to run a web service sample.
We need to follow the below steps.
1) Host your web service.
2) Kindly paste the service URL in the service URL property
and run the sample locally.
3) And then publish the sample.
4) Then load the Document.
This will resolve your issue. If not kindly send us the
sample you have tried and the hosted URL which can be able to access by us if
possible.