# Receivin opertation notification

**URL:** <https://community.cumulocity.com/t/receivin-opertation-notification/7663>\
**Category:** Forum\
**Tags:** cumulocity\
**Created:** [February 17, 2020, 12:49pm UTC](https://community.cumulocity.com/t/receivin-opertation-notification/7663 "2020-02-17T12:49:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![V\_Schaefer](https://avatars.discourse-cdn.com/v4/letter/v/a87d85/32.png) [@V\_Schaefer](https://community.cumulocity.com/u/V_Schaefer)\
**Post date:** [February 17, 2020, 12:49pm UTC](https://community.cumulocity.com/t/receivin-opertation-notification/7663/1 "2020-02-17T12:49:00Z")

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Dear Cumulocity Team,

I never receive an “operation” via the subscription to /devicecontrol/notifications at my own agent.  
The configuration for the mqtt client looks like this:  
Connection with websocket: wss://.cumulocity.com:433/mqtt  
Username: /  
Pass:   
Using MQTT v3.1.1

I can publish a measurement via measurement/measurements/create on same above configuration. But I never get informed about an operation.  
The device is setup to receive a Restart Operation:

```auto

{
...
com_cumulocity_model_Agent:	{},
c8y_SupportedOperations: ["c8y_Restart",	"c8y_Command"],
...
}
```

Could you give me a hint what I’m doing wrong?

I’m doing it the same way you describe here: [https://cumulocity.com/guides/reference/smartrest-two/](https://cumulocity.com/guides/device-sdk/mqtt/#json)  
(not using SmartRest).

Thank you.  
Best regards

Volker Schaefer

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<div class="post-metadata">

**Author:** ![V\_Schaefer](https://avatars.discourse-cdn.com/v4/letter/v/a87d85/32.png) [@V\_Schaefer](https://community.cumulocity.com/u/V_Schaefer)\
**Post date:** [February 18, 2020, 10:04am UTC](https://community.cumulocity.com/t/receivin-opertation-notification/7663/2 "2020-02-18T10:04:39Z")

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Hi there,

you can try it with the MQTTBox. It’s the same as describe above!  
Any idea?

Best regards

Volker Schaefer

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<div class="post-metadata">

**Author:** ![V\_Schaefer](https://avatars.discourse-cdn.com/v4/letter/v/a87d85/32.png) [@V\_Schaefer](https://community.cumulocity.com/u/V_Schaefer)\
**Post date:** [February 18, 2020, 4:06pm UTC](https://community.cumulocity.com/t/receivin-opertation-notification/7663/3 "2020-02-18T16:06:25Z")

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Hi there,

is it necessary to active mqtt transmission on tenant side?

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<div class="post-metadata">

**Author:** ![system](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/system/32/31990_2.png) [@system](https://community.cumulocity.com/u/system)\
**Post date:** [April 2, 2021, 3:44pm UTC](https://community.cumulocity.com/t/receivin-opertation-notification/7663/4 "2021-04-02T15:44:15Z")

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