I've developed a fairly simple web service which receives an xml string, validates it and passes it on to our internal database.
This has been written to enable one of our clients to send us idocs from their SAP system.
The trouble is that, although the web service works fine from a .net program, over the internet, the client's SAP system can't access it. They either get just an http 200 back (rather than the status code that the web...