IOT Central : "properties" values not taken into account

Question

Hello all,

I am facing some problems with "properties" values sent by device to IOT Central application. I do not understand if the problem comes from my template or from the JSON payload sent by my device.

Here my template :

And one of my payload (processed by IOT Central - the original payload is more simple with only the 2 values) :

The values are not recognized when they are defined as "properties" in the template, but it works perfectly for "telemetry" values.

On this page, the payload examples for "properties" values look simple, is it missing something ? Is there anything to add in the payload when we would send "properties" values ?
https://learn.microsoft.com/fr-fr/azure/iot-central/core/concepts-telemetry-properties-commands

Thanks in advance for the help !
Thomas

Answer 1

Hi,

It looks like your sending the data in the correct format. However, I think it's the way that you're sending the data that's causing the issue.

Your device should report property values in a different way from sending telemetry.

Take a look at https://learn.microsoft.com/azure/iot-central/core/howto-use-properties for more information. For complete examples in different programming languages, see https://learn.microsoft.com/azure/iot-central/core/tutorial-connect-device

Regards,
Dominic