I found the problem. I defined a complex type (UserClass). When there is a byte[] in it (with getter and setter), I get the above Exception for document/literal. When I deploy the Projekt as rpc/literal and with jbossws 1.0.3GA I get a NullPointerException. With jbossws 1.0.4GA it works (only rpc/literal) | @WebMethod | public UserClass getMethods() throws UserException{...} | | public class UserClass implements Serializable{ | | private byte[] bytea = null; | . | . | . | public UserClass { | } | | public byte[] getBytea() { | return bytea | } | | public void setBytea(byte[] bytea) { | this.bytea = bytea; | } | . | . | . | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3996609#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...