Hi I am trying to write a webservice, that throws a user-defined exception. I am using bottom-up approach and when I package and deploy the webservice in JBoss 4.2.2 AS, I am getting exceptions. Looks like it does not like the way the BaseErrorType (user-defined exception) is defined. How do I fix this issue? Here is my webservice: ServiceRequests.java @WebService public class ServiceRequests { public List GetNpaNxxList( @WebParam(name="postalCode") String postalCode, @WebParam(name="npa") String npa, @WebParam(name="npaNxx") String npaNxx, @WebParam(name="transactionId") String transactionId, @WebParam(name="restrictedFlag") boolean restrictedFlag) throws BaseErrorType { List list = new ArrayList(); return list; } BaseErrorType.java import javax.xml.bind.annotation.XmlType; @XmlType(name="com.vzw.opc.ws.BaseErrorType") public class BaseErrorType extends java.lang.Exception{ public BaseErrorType() {} public BaseErrorType(String msg) { super(msg); } } When I package and deploy my webservice in Jboss, I am getting this exception: 2009-11-16 11:19:21,803 ERROR [org.jboss.deployment.MainDeployer] Could not start deployment: file:/opt/vzw/webserver/jboss-4.2.2.GA/server/provapi-ws/deploy/OnstarWebService.war javax.xml.ws.WebServiceException: @XmlType missing from fault bean: com.vzw.opc.ws.jaxws.BaseErrorTypeBean at org.jboss.ws.metadata.umdm.FaultMetaData.initializeFaultBean(FaultMetaData.java:256) at org.jboss.ws.metadata.umdm.FaultMetaData.eagerInitialize(FaultMetaData.java:226) at org.jboss.ws.metadata.umdm.OperationMetaData.eagerInitialize(OperationMetaData.java:464) at org.jboss.ws.metadata.umdm.EndpointMetaData.eagerInitializeOperations(EndpointMetaData.java:533) at org.jboss.ws.metadata.umdm.EndpointMetaData.initializeInternal(EndpointMetaData.java:519) at org.jboss.ws.metadata.umdm.EndpointMetaData.eagerInitialize(EndpointMetaData.java:507) at org.jboss.ws.metadata.umdm.ServiceMetaData.eagerInitialize(ServiceMetaData.java:429) View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4265965#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...