Jim Ma [http://community.jboss.org/people/jim.ma] replied to the discussion "Error on java.lang.IllegalStateException: Cannot build JAXB" To view the discussion, visit: http://community.jboss.org/message/536445#536445 -------------------------------------------------------------- The problem is in your types classes passed to the wsprovide tool.  One of reason I can see from the exception stack trace is the types class implemented interface java.io.Serializable and JAXB can not handle it. Here is the reason why JAXB can not :  http://weblogs.java.net/blog/2006/06/06/jaxb-and-interfaces http://weblogs.java.net/blog/2006/06/06/jaxb-and-interfaces -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/536445#536445] Start a new discussion in JBoss Web Services at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]