Hi. first of all thanks for your reply! "weston.price(a)jboss.com" wrote : To clarify, are you implementing a ResourceAdapter? It sounds like you are doing far too much in your code as JCA takes care of most of this for you. | Actually no: I do not implement a ResourceAdapter. I implement an XAResource. As far as I read that should do the job. Eventhough I have to admit that with the described service it is not possible to create a full featured XAResource. I also have to admit that I am fairly new to the JTA topic. I've done some reading an my idea was (just to clarify the terms that) in my scenario we have: TransactionManager - as provided by JBoss AS ResourceManager - the external service provider which will deal with the payments. My XAResource - The interface used to make the TransactionManager work with the ResourceManager (i.e. the Service Provider) Am I missing a point here? Thanks in advance! Greetings PeeR View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4023658#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...