Where multiple threads attempt to create a port or call an endpoint from a newly created Service one of a number of errors is reported.

java.lang.NullPointerException
at org.jboss.ws.extensions.xop.jaxws.ReflectiveAttachmentRefScanner.isJDKType(ReflectiveAttachmentRefScanner.java:262)
at org.jboss.ws.extensions.xop.jaxws.ReflectiveAttachmentRefScanner.scanBean(ReflectiveAttachmentRefScanner.java:78)
at org.jboss.ws.metadata.umdm.ParameterMetaData.initializeAttachmentParameter(ParameterMetaData.java:500)
at org.jboss.ws.metadata.umdm.ParameterMetaData.eagerInitialize(ParameterMetaData.java:485)
at org.jboss.ws.metadata.umdm.OperationMetaData.eagerInitialize(OperationMetaData.java:465)
at org.jboss.ws.metadata.umdm.EndpointMetaData.eagerInitializeOperations(EndpointMetaData.java:526)
at org.jboss.ws.metadata.umdm.EndpointMetaData.initializeInternal(EndpointMetaData.java:510)
at org.jboss.ws.metadata.umdm.EndpointMetaData.eagerInitialize(EndpointMetaData.java:500)
at org.jboss.ws.metadata.builder.jaxws.JAXWSClientMetaDataBuilder.rebuildEndpointMetaData(JAXWSClientMetaDataBuilder.java:308)
at org.jboss.ws.core.jaxws.spi.ServiceDelegateImpl.getPortInternal(ServiceDelegateImpl.java:262)
at org.jboss.ws.core.jaxws.spi.ServiceDelegateImpl.getPort(ServiceDelegateImpl.java:193)
at javax.xml.ws.Service.getPort(Service.java:116)

java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:449)
at java.util.AbstractList$Itr.next(AbstractList.java:420)
at org.jboss.ws.metadata.umdm.EndpointMetaData.eagerInitializeOperations(EndpointMetaData.java:524)
at org.jboss.ws.metadata.umdm.EndpointMetaData.initializeInternal(EndpointMetaData.java:510)
at org.jboss.ws.metadata.umdm.EndpointMetaData.eagerInitialize(EndpointMetaData.java:500)
at org.jboss.ws.metadata.builder.jaxws.JAXWSClientMetaDataBuilder.rebuildEndpointMetaData(JAXWSClientMetaDataBuilder.java:308)
at org.jboss.ws.core.jaxws.spi.ServiceDelegateImpl.getPortInternal(ServiceDelegateImpl.java:262)
at org.jboss.ws.core.jaxws.spi.ServiceDelegateImpl.getPort(ServiceDelegateImpl.java:193)
at javax.xml.ws.Service.getPort(Service.java:116)

java.lang.IllegalStateException: Cannot synchronize to any of these methods:
at org.jboss.ws.metadata.umdm.OperationMetaData.eagerInitialize(OperationMetaData.java:492)
at org.jboss.ws.metadata.umdm.EndpointMetaData.eagerInitializeOperations(EndpointMetaData.java:526)
at org.jboss.ws.metadata.umdm.EndpointMetaData.initializeInternal(EndpointMetaData.java:510)
at org.jboss.ws.metadata.umdm.EndpointMetaData.eagerInitialize(EndpointMetaData.java:500)
at org.jboss.ws.metadata.builder.jaxws.JAXWSClientMetaDataBuilder.rebuildEndpointMetaData(JAXWSClientMetaDataBuilder.java:308)
at org.jboss.ws.core.jaxws.spi.ServiceDelegateImpl.getPortInternal(ServiceDelegateImpl.java:262)
at org.jboss.ws.core.jaxws.spi.ServiceDelegateImpl.getPort(ServiceDelegateImpl.java:193)
at javax.xml.ws.Service.getPort(Service.java:116)

java.lang.IllegalStateException: Cannot synchronize to any of these methods:
public abstract org.jboss.support.ws.phonebook.TelephoneNumber org.jboss.support.ws.phonebook.PhoneBook.lookup(org.jboss.support.ws.phonebook.Person)

OperationMetaData:
qname=

lookup
javaName=lookup
style=document/literal/WRAPPED
oneWay=false
soapAction=
at org.jboss.ws.metadata.umdm.OperationMetaData.eagerInitialize(OperationMetaData.java:492)
at org.jboss.ws.metadata.umdm.EndpointMetaData.eagerInitializeOperations(EndpointMetaData.java:526)
at org.jboss.ws.metadata.umdm.EndpointMetaData.initializeInternal(EndpointMetaData.java:510)
at org.jboss.ws.metadata.umdm.EndpointMetaData.eagerInitialize(EndpointMetaData.java:500)
at org.jboss.ws.metadata.builder.jaxws.JAXWSClientMetaDataBuilder.rebuildEndpointMetaData(JAXWSClientMetaDataBuilder.java:308)
at org.jboss.ws.core.jaxws.spi.ServiceDelegateImpl.getPortInternal(ServiceDelegateImpl.java:262)
at org.jboss.ws.core.jaxws.spi.ServiceDelegateImpl.getPort(ServiceDelegateImpl.java:193)
at javax.xml.ws.Service.getPort(Service.java:116)

javax.xml.ws.WebServiceException: java.lang.IllegalStateException: Cannot find property: javax.xml.ws.handler.message.outbound
at org.jboss.ws.core.jaxws.client.ClientImpl.handleRemoteException(ClientImpl.java:307)
at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:245)
at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:164)
at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:150)
at $Proxy15.lookup(Unknown Source)
at org.jboss.support.ws.phonebook.ThreadedCallingClient$Caller.run(ThreadedCallingClient.java:51)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.IllegalStateException: Cannot find property: javax.xml.ws.handler.message.outbound
at org.jboss.ws.core.jaxws.handler.MessageContextJAXWS.processPivot(MessageContextJAXWS.java:110)
at org.jboss.ws.core.jaxws.client.ClientImpl.processPivot(ClientImpl.java:266)
at org.jboss.ws.core.CommonClient.processPivotInternal(CommonClient.java:467)
at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:395)
at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:233)

javax.xml.ws.soap.SOAPFaultException: Request struct cannot be null
at org.jboss.ws.core.jaxws.SOAPFaultHelperJAXWS.getSOAPFaultException(SOAPFaultHelperJAXWS.java:75)
at org.jboss.ws.core.jaxws.binding.SOAP11BindingJAXWS.throwFaultException(SOAP11BindingJAXWS.java:109)
at org.jboss.ws.core.CommonSOAPBinding.unbindResponseMessage(CommonSOAPBinding.java:553)
at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:371)
at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:233)
at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:164)
at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:150)
at $Proxy15.lookup(Unknown Source)

javax.xml.ws.soap.SOAPFaultException: java.lang.NullPointerException
at org.jboss.ws.core.jaxws.SOAPFaultHelperJAXWS.getSOAPFaultException(SOAPFaultHelperJAXWS.java:75)
at org.jboss.ws.core.jaxws.binding.SOAP11BindingJAXWS.throwFaultException(SOAP11BindingJAXWS.java:109)
at org.jboss.ws.core.CommonSOAPBinding.unbindResponseMessage(CommonSOAPBinding.java:553)
at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:371)
at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:233)
at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:164)
at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:150)
at $Proxy15.lookup(Unknown Source)