I tried wscompile and it did work. Many thanks to Alex for your help! 1. Install jwsdp from: http://java.sun.com/webservices/downloads/previous/webservicespack.jsp 2. When asked web container, choose “no web container” option. 3. Add c:\sun\jwsdp-2.0\jwsdp-2.0shared\bin to your Path variable 4. Edit build.property under c:\testbed\jbpm-bpel-1.1.GA\config to add wscompile directory: jwsdp.home=C:/Sun/jwsdp-2.0 5. following the jbpm bpel user guide, start jboss application server, create schema, deploy hello world service, then ant test, now get build successfully, then check hello/target/test/reports, we can find communications between client and servers confirming the service is working. Regards Judy View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4180799#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...