QuickBooks WebConnector authentication fails: “unexpected element (uri:”“, local:”strUserName“)”

_x000D_ _x000D_ I'm trying to integrate a Java web application running under JBoss with QuickBooks Desktop and I'm using WebConnector for this purpose. I also use JAX-WS for web service implementation in Java. After a number of solved issues I have faced the one I've stuck: namely while WebConnector is trying to call authenticate method, JBoss throws the following exception: [SOAPFaultHelperJAXWS] SOAP request exception javax.xml.ws.WebServiceException: javax.xml.bind.UnmarshalException: unexpected element (uri:"", local:"strUserName"). Expected elements are <{http://developer.intuit.com/}strPassword>,<{http://developer.intuit.com/}strUserName> and [SOAPFaultHelperJAXWS] SOAP request exception javax.xml.ws.WebServiceException: javax.xml.bind.UnmarshalException: unexpected element (uri:"", local:"strVersion"). Expected elements are <{http://developer.intuit.com/}strVersion> Interface: @WebService(name = "QBWebConnectorService", targetNamespace = "http://developer.intuit.com/") public interface QBWebConnectorService { @WebMethod public String serverVersion( @WebParam(name = "strVersion", targetNamespace = "http://developer.intuit.com/") String strVersion); @WebMethod public String clientVersion( @WebParam(name = "strVersion", targetNamespace = "http://developer.intuit.com/") String strVersion); @WebMethod public ArrayOfString authenticate( @WebParam(name = "strUserName", targetNamespace = "http://developer.intuit.com/") String strUserName, @WebParam(name = "strPassword", targetNamespace = "http://developer.intuit.com/") String strPassword); ... } Implementation: @WebService(serviceName = "QBWebConnectorService", targetNamespace = "http://developer.intuit.com/", portName = "QBWebConnector", name = "QBWebConnector", endpointInterface = "com.example.myapp.ws.QBWebConnectorService") public class QBWebConnector implements QBWebConnectorService { @Override public ArrayOfString authenticate(String strUserName, String strPassword) { ArrayOfString arr = new ArrayOfString(); arr.string = new ArrayList(); arr.string.add("{57F3B8B1-86F1-4fcc-B1EE-566DE1813D20}"); arr.string.add(""); //To use the currently open company, specify an empty string return arr; } ... } Calls to serverVersion() and clientVersion() are executed as expected with no errors. And call to authenticate() has this issue with the namespace. But I just can't figure out why. Can anybody provide some ideas? Thanks...