Hello @Romain Toma , Thank you for providing details over the private session. After initial analysis I have found couple of errors while processing messages ( function : document extract import) :
Could not process message right now, avoiding automatic Complete() call. info=InvalidArgument Timeout value of 00:05:00 was exceeded by function Value cannot be null. Parameter name: source
Also, I don't see any host.json file , there are High CPU issue. Your application is running on consumption plan. Please consider if the resources are enough for your requirement. Otherwise, you can always upgrade to a better plan.
Please check if there is any issue with the incoming messages or if any property is missing. For the timeout issue , you can increase it to 10 mins (maximum) and see if that helps.
However, if you need application specific assistance and needs dedicated troubleshooting. Hence I would request you to open a support ticket with Microsoft Support if you have a subscription which allows you to do so. Otherwise , you can send an email with subject line “Attn:Jaya” to AzCommunity[at]Microsoft[dot]com referencing this thread along with the subscription id.
If you think this answer helped please "Accept the answer" and "Up-vote" so that it helps others in the community.