Hello,
problem is solved.
What's the reason for this ?
Exception CX_ST_GROUP_MISSING_CASE is not correct, the transformation works fine, with STRANS you can check this.
But in SE80 you can check the client-proxy with the definition of wsdl and any objects are missing or must change. Why I have no idea, it seems like a bug after implementation support packages.
So after generating missing objects and activating the webservice works fine, no exception occurs.
best regards
Holger