Ok now I have followed the instructions step by step. I got source code for JBoss 4.0.5 as per the instructions. Everything builds well but when I run 'ant tests' I get following exception for several tests. 14:45:59,358 ERROR [MainDeployer] Could not create deployment: file:/D:/jboss-4. 0.5.ejb3/build/output/jboss-4.0.5.GA-ejb3/server/default/tmp/deploy/tmp37641jaxr pc-jbws165.ear-contents/jaxrpc-jbws165-both.jar java.lang.NoClassDefFoundError: javax/xml/rpc/encoding/TypeMappingRegistry at org.jboss.ws.core.server.ServiceEndpointDeployer.create(ServiceEndpoi ntDeployer.java:84) at org.jboss.ws.integration.jboss42.DeployerInterceptor.createServiceEnd point(DeployerInterceptor.java:127) at org.jboss.ws.integration.jboss42.DeployerInterceptorEJB.createService Endpoint(DeployerInterceptorEJB.java:43) at org.jboss.ws.integration.jboss42.DeployerInterceptor.create(DeployerI nterceptor.java:78) at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor. create(SubDeployerInterceptorSupport.java:180) at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterce ptor.java:91) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker. java:264) So which jar file am I missing? Where should it go? Notice in the stack trace 'org.jboss.ws.integration.jboss42.DeployerInterceptor' is called and I have JBoss 4.0.5 so is it right? Thank you, Meghana View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4024011#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...