# MQTT Node Error

**URL:** <https://forums.losant.com/t/mqtt-node-error/5289>\
**Category:** Bug Report\
**Tags:** workflow\
**Created:** [October 10, 2023, 7:39am UTC](https://forums.losant.com/t/mqtt-node-error/5289 "2023-10-10T07:39:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ChrisGM](https://avatars.discourse-cdn.com/v4/letter/c/51bf81/32.png) [@ChrisGM](https://forums.losant.com/u/ChrisGM)\
**Post date:** [October 10, 2023, 7:39am UTC](https://forums.losant.com/t/mqtt-node-error/5289/1 "2023-10-10T07:39:55Z")

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Existing workflows now showing errors when MQTT nodes are used.  
Seems to be an invalid topic.  
I can’t seem to find a format which is accepted.

My normal topic is deviceModel/commandType/serialNumber

![image](https://us1.discourse-cdn.com/flex015/uploads/getstructure/original/2X/6/6d593dac2c1680b3944293ea8a32521a70d45819.png)

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**Author:** ![Dylan\_Schuster](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.losant.com/dylan_schuster/32/2850_2.png) [@Dylan\_Schuster](https://forums.losant.com/u/Dylan_Schuster)\
**Post date:** [October 10, 2023, 12:09pm UTC](https://forums.losant.com/t/mqtt-node-error/5289/2 "2023-10-10T12:09:16Z")

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I see what you mean; I’m taking a look now. Thanks.

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**Author:** ![Dylan\_Schuster](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.losant.com/dylan_schuster/32/2850_2.png) [@Dylan\_Schuster](https://forums.losant.com/u/Dylan_Schuster)\
**Post date:** [October 10, 2023, 1:32pm UTC](https://forums.losant.com/t/mqtt-node-error/5289/3 "2023-10-10T13:32:57Z")

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We just pushed a fix for this. Thanks for bringing it to our attention and apologies for the UI bug.