Sorry for causing the confusion. Let me make it simple: (in my test, the invoke itself is very fast and takes much less than 1 second) First, 1 wait activity | <wait for="'PT5S'" /> | <invoke ? /> | or | <invoke ? /> | <wait for="'PT5S'" /> | They work. Second, 2 wait activities | <wait for="'PT5S'" /> | <wait for="'PT5S'" /> | <invoke ? /> | or | <invoke ? /> | <wait for="'PT5S'" /> | <wait for="'PT5S'" /> | They work. Third, 2 wait activities, but one before and one after the invoke, this does NOT work | <wait for="'PT5S'" /> | <invoke ? /> | <wait for="'PT5S'" /> | It timed out after 60 seconds (while both client timeout and responseTimeout were set at 60 seconds). (In my test, the invoke itself is very fast and takes much less than 1 second) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3981839#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...