"kukeltje" wrote : this totally depends on the appserver. jBPM has no preference. But.... it could be that there are conflicting libs if you use something other than that which comes with the AS Thanks for your reply you mean, we can deploy jBPM 3.1.2 from JBoss 4.0.3 to 4.0.5 or some higher version without any changes? if so, I prefer JBoss 4.0.5+, which has a better support of WS tool View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4092891#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...