Azure IoT Central
An Azure hosted internet of things (IoT) application platform.
364 questions
Why does IoT Central duplicate telemetry messages?
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Mark Waters
0
Reputation points
I have found what appears to be a bug within IoT Central.
Every message received by the application is duplicated. Time stamps are identical and the data is identical.
The 'device connected' and 'device disconnected' messages which are system generated are also duplicated.
While our devices is writted using the embedded SDK, the same issue occurs when connecting a mobile phone to the application using the IoT PnP app. This rules out any issues with the device itself.
The application was working fine before this issue. No settings were changed when this issue began to appear. It has appeared across all devices in the application.
It is unique to the one application. I have connected the same mobile device to another application and there is no message duplication.
I would like to know how this can be resolved. Considering there was nothing changed within the app I beleive this to be a backend bug in IoT Central itself.
{count} votes
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Sander van de Velde | MVP 33,136 Reputation points MVP2024-09-09T13:07:36.14+00:00 Hello @Mark Waters ,
welcome to this moderated Azure community forum.
It seems you are using a cloud-to-device communication that is based on Azure IoT Cloud messages.
This way of communication involves sending an acknowledge on receival.
Because you have tested this in several ways it seems we can rule out this common caveat.
You can `give feedback to Microsoft about your Azure IoT central via this menu item:
If you want to get connected with Microsoft directly with a better chance to have this resolved quickly, it is preferred to submit a support ticket.
Notice that the menu above also offers a 'Technical support' option leading to a support ticket dialog.
If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.
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