Behavior if application doesn't response
for your information:
IoT Creators platform (SCS) times out the message forwarding POST request to the application URL if the application doesn’t response within 5 seconds.
In case of timeout SCS tries to re-POST the message 5 times. Every minute one retry is performed.
While the systems trys to re-send the message no new messages are POSTed to the application. There are queued.