I am trying to invoke a business method using stateless session bean. Lookup is just fine, but when I try to invoke the method I get: java.io.NotSerializableException: com.wsdl.common.SenderInfoType It looks like SenderInfoType needs to be serializable, but the problem is that it's a tool generated code and can't be serializable. Is there a work around for this problem? Another question is why would stateless session bean need object to implement serializable interface ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4160076#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...