In a prompt I catch the "No Match" and "No Input" events.
No Input
Prompt
Return Event <threshold="2">
In my AppRoot, I also catch "No Match" and "No Input". I would expect that in the initial prompt, that the No Input event would be thrown after two attempts and the call flow would return to the AppRoot, but it just exits the application.

From Report Log:
17/10/2013 10:03:02:662 WARN - In Progress | session id:sess8415754 | ProjectTemplate2:XXXX_SampleMenu-smSampleMenu | | Generated a ReturnError from main application, application will exit when executed. Returning caughtEvent | | | undefined
17/10/2013 10:03:17:296 INFO - In Progress | session id:sess8415754 | ProjectTemplate2:AvayaDefaultExitHandler | Default Disconnect Handler | Default Exit executed, application exiting | | | undefined

From Trace Log:
17/10/2013 10:03:02:612 INFO - 051E10E83B585C20357D57D17CAC02FD:/ProjectTemplate2 : Using SCESession 051E10E83B585C20357D57D17CAC02FD:/ProjectTemplate2 servlet : XXXX_SampleMenu-smSampleMenu
17/10/2013 10:03:17:245 INFO - 051E10E83B585C20357D57D17CAC02FD:/ProjectTemplate2 : Using SCESession 051E10E83B585C20357D57D17CAC02FD:/ProjectTemplate2 servlet : AvayaDefaultExitHandler

Which version of OD are you using ?

I am using AAOD 6.0

The Return Event item is for send the event to the calling application if this is a module. That's what makes it exit the app on 2 attempts.

The prompt with the Return Event is in a sub flow. I would expect the Return Event to be caught in the AppRoot in the main flow. If I create a custom event and throw the custom event instead of using a Return Event, the AppRoot will catch the custom event. If I do not catch the NoInput in the prompt, then the AppRoot will catch the NoInput event. So why does AppRoot not catch the Return Event?

Can you reproduce this in simulation in the OD dev environment? I can't. If you can, can you send me the your simplified version of the app and module to demonstrate the problem?

I can send you a sample app that shows the issue, but I don't know where to send it.

Is the Return Event the same as Exit, but with event information attached? I looked at the documentation, but it is very confusing.

Yes. Return is like exit but with event attached. You can send me the apps in an archive to wilsonyu@avaya.com.