I installed Adobe Designer 7.0 locally and created a form which uses a data connection to a web service for a standard BAPI.
The form designer was able to load the WSDL correctly and I was able to include the desired input and output fields as well as the submit button (which was under the data connection).
However, when I tried to run the form, nothing happens when I click on the submit button.
The properties of the button indicate an execute of a data connection and all the entries seem ok.
For verification, I tested the web service using SAP SOAP Client and everything works fine.
The web service browser is running on WebAS620 - could this be the issue? I hope not - it doesn't make sense because a SOAP call should be independent of the underlying system.