You can skip the 'finally' when using the callback because it's managed outside of the task service: | [...] | finally { | taskService.removeEnvironmentObjects(); | } | Same applies to the lookup key. Using a callback would force the task service to engage the lookup with it's key and not the client environment. | taskService.setEnvironmentObject("authentication", authentication); | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4218527#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...