Somehow missed your post earlier. It seems you do not have a command service in your jbpm.cfg.xml with a name "txRequiredCommandService". You need an entry something like this (you may need to change as per your exact requirement): | <command-service name="txRequiredCommandService"> | <skip-interceptor /> | <retry-interceptor /> | <environment-interceptor /> | <standard-transaction-interceptor /> | </command-service> | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269194#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...