After some more research I'm pretty sure that in the case of a truly dynamic client (i.e. no client-side stub generation from a remote WSDL before running the client that then invokes the WebService call) that should interact with a WebService operation, that has one or more custom complex input/output parameters, I can only create ("manually and dynamically") and then send SOAP messages via Dispatch (even JAXB-Dispatch won't help in my case). In the case of simple data types I could still use the "old" JAX-RPC DII client approach. Can you (or someone else) think of other possibilities or tell me if I'm completely wrong? Does anyone know of a Java library that can create "sample" SOAP messages (see Altova XML Spy or Eclipse WebServices Explorer or Web Service Console Eclipse Plugin or ...) given a specific WebService operation in a WSDL (I know this question may be a bit off topic, but it seems as it would be a key building block in order to go with the JAX-WS Dispatch client)? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030966#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...