Hi, I need a help for the following configuration. I need to define a web service (with SOAP over JMS). For scalability purpose I need to deploy multiple instances of the same web service. But all the instances of the service are subscriber to a single topic ( name is 'testTopic'). How do I specify that the message should be removed from the topic after read by one subscriber? I guess by this load balancing can be done. Default configuration for testTopic in destinations-service.xml is extracted below: <mbean code="org.jboss.jms.server.destination.TopicService" name="jboss.messaging.destination:service=Topic,name=testTopic" xmbean-dd="xmdesc/Topic-xmbean.xml"> <depends optional-attribute-name="ServerPeer">jboss .messaging:service=ServerPeer</depends> <depends>jboss.messaging:service=PostOffice</depends> <attribute name="SecurityConfig"> <security> <role name="guest" read="true" write="true"/> <role name="publisher" read="true" write="true" create="false"/> <role name="durpublisher" read="true" write="true" create="true" /> </security> </attribute> </mbean> Where can I get the explanation for all possible attributes/tags used to configure a topic in destinations-service.xml? Please correct me if my approach for achieving scalability by deploying multiple instance of same web service (war files) listening on a single topic is wrong. The versions I am using are: ----------------------------------------- JBoss AS 4.2.3.GA jbossws-3.0.1-native-2.0.4.GA jboss-messaging-1.4.2.GA regards, Tanmay