solved it OMG... Forget about the changes in jboss-jms-beans.xml above. I thought there is a failure like the "xAConnectionJNDIRef"-property in ALPHA_8 and this could be the cause for the NPE. I use JUnit 4.1 and JBoss_Embeddable_ALPHA_9 with /conf and the jars in /lib in the classpath. I only forgot to add jms-ra.rar not "jar" grrr** and jcainflow.rar to the classpath. I didn't notice the rar-Extension in the declaration of the "jms-rar-DeploymentInfo"-bean the whole time. Lucky View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4020363#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...