Elements from multiple namespaces can be used within the same message definition. 3.5.4 Parser domains The following new domains have been introduced since WebSphere MQ Integrator V2.1: XMLNS XMLNSC JMSMap JMSStream MIME More information about the new domains can be found in the WebSphere Message Broker Information Center at: http://publib.boulder.ibm.com/infocenter/wmbhelp/v6r0m0/index.jsp 3.5.5 Runtime validation A number of enhancements have been made to improve the validation of messages flowing through, as follows: