Thanks Attila for the information - it has been extremely helpful for my project.
I am hoping that you could verify one additional thing:
When SAP consumes a web service and Basic authentication is used are the credentials sent in the first request to the web service host?
The reason I ask:
In the SRT_UTIL payload trace screenshots below the HTTP header appears in the 2nd request. This has led the web server support team to guess that the first request does not include credentials so it gets a 401 response. I believe that this is not true. It would be most helpful if you can confirm that credentials are passed with the initial request to the hosting web service.
SRT_UTIL Screenshots
Second Request (note that the HTTP Header button appears here):
Thanks Again! Jeff