IoT's RegisterThing intermittently not working

Question

I successfully use CreateKeysAndCertificate via an MQTT topic (IoT provision by claim).  But then when I  use RegisterThing via an MQTT topic, it only works about 50% of the time, even though my IoT code and AWS  settings remain unchanged.

My pre-provisioning hook Lambda is called every time by RegisterThing according to the CloudWatch logs.   And the Lambda simply returns `allowProvisioning : true` every time within 200 ms according to CloudWatch.   But HALF the time nothing ever comes back on `$aws/provisioning- templates/myThing/provision/json/rejected` nor `$aws/provisioning- templates/myThing/provision/json/accepted`.  RegisterThing is kind of a black box in the cloud, so is  there something I can do?

Edit: It seems that when the ***previous*** call to RegisterThing (via MQTT) was made longer than ~ 5  minutes ago, a call to RegisterThing fails to publish its success to the `$aws/provisioning-templates/myThing/provision/json/accepted` topic.

I want $100 or a job offer for rigorously experimenting to discover this rather obscure issue...  Ha!  But  seriously, I'd appreciate if someone else can confirm on their end what I'm seeing.

Iot4Me · Answer

"Hello darkness, my old friend,
I've come to talk with you again,
Because a vision softly creeping,
Left its seeds while I was sleeping,
And the vision that was planted in my brain
Still remains
Within the sound of silence." - Simon and Garfunkel

IoT's RegisterThing intermittently not working

Relevant content