MQTT sensor does not allow state_class

Configuration
1

I am trying to add the “state_class” property to an existing MQTT sensor but got the message “Property state_class is not allowed”.
However from the documentation an several examples this should be possible. Does anyone know what I am doing wrong?

The original sensor configuration looks as follows:

- platform: mqtt
  name: Soladin Total_Power
  unit_of_measurement: "kWh"
  state_topic: "sensors/pv/soladin/stats/Total_Power"
  value_template: "{{ value|int / 100 }}"
  device_class: "energy"

When I add the “state_class” property as follows :

- platform: mqtt
  name: Soladin Total_Power
  unit_of_measurement: "kWh"
  state_topic: "sensors/pv/soladin/stats/Total_Power"
  value_template: "{{ value|int / 100 }}"
  device_class: "energy"
  state_class: 'measurement'

The message : “Property state_class is not allowed” is shown.
Anyone an idea?

2

Are you using an older version of Home Assistant? Because it works for me using 2021.9.7.

Screenshot from 2021-09-25 11-13-16

Screenshot from 2021-09-25 11-12-57
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3

it works for me, and you should use

    state_class: total_increasing
4

Hi,

Thanks for your reply,

I am also running Home Assistant 2021.9.7 in a virtual machine (HASSOS) on my Synology.

Perhaps it has something to do with the fact that I started to use Home Assistant several years ago in a Synology Package, then merged to run in a docker and finally moved to HASSOS in a Virtual Machine.

As soon as I type “state_class” this error pops up.

Regards, Will

5

What do you mean by “as soon as I type”? Are you using Visual Studio Code with the Home Assistant Config Helper and that message appears in VS Code when you enter state_class?

Because if that’s what you mean then that message has nothing to do with Home Assistant. That’s reported by the Config Helper (and it’s out of date).

6

Thanks Taras!

That was indeed the case. I just ignored the error message and the state was added to the entity:

image
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Regard, Will

1 Like
7

Glad to hear it resolved the mystery of the error message’s source.

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