The main advantages of a SMPC compared to an extended SFSB-bound PC are: - PC Injection works everywhere - PC Propagation rules are simplified, not bound to instantiation or transaction propagation (SFSB calling SLSB for example) - PC Scoping is simplified and tied into the conversation programming model of Seam - PCs can be atomic (manual flushing) without changes to your transaction assembly Advertisement: http://www.manning.com/bauer2 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4000700#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...