https://forum.mendix.com/questions/6863/Create-time-out-for-App-Service :-)
I found out that you have to set up the consumed app service by going to the app service in the nav tree than Settings, select the Settings tab set the Use timeout on actions to yes, and then set how much time we want to allow before the error handling is triggered.
then if your app service call action has error handling enabled, it should work.