whitexos12, the error you are getting: java.util.List is an interface, and JAXB can't handle interfaces. means that your web service is either taking a List as a parameter or returning a List. That is not allowed because List is not a class, it is an interface. You have to change the parameter (or return type) to a class that implements List, such as ArrayList. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4139870#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...