HTTPS - Destination Unreachable

I am using 1.1 and wse 2.0 and created a web service and winform to
call the service. It works under http but now need to move to https. When
the url of the web service is changed to https://.... the following error

Destination Unreachable --> WSE816: The <To> header must match the value of
an incoming message's HTTP Request Url if the soap receiver does not have an
actor name. The <To> header received contained while the HTTP Request Url was

I am unclear about how/where the actore name is set. On the web service or
the client.