# MQTT Engine tag names/folders clashing

**URL:** <https://forum.inductiveautomation.com/t/mqtt-engine-tag-names-folders-clashing/63131>\
**Category:** Ignition\
**Tags:** ignition81, ignition80, perspective\
**Created:** [August 18, 2022, 5:54am UTC](https://forum.inductiveautomation.com/t/mqtt-engine-tag-names-folders-clashing/63131 "2022-08-18T05:54:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ngonidzashe\_Francis](https://avatars.discourse-cdn.com/v4/letter/n/65b543/32.png) [@Ngonidzashe\_Francis](https://forum.inductiveautomation.com/u/Ngonidzashe_Francis)\
**Post date:** [August 18, 2022, 5:54am UTC](https://forum.inductiveautomation.com/t/mqtt-engine-tag-names-folders-clashing/63131/1 "2022-08-18T05:54:06Z")

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Can someone help me resolve this Ignition MQTT issue. I am reading/writing tags from similar devices. To keep my tag structure consistent, I labelled one device PLCA and the other PLCB. I can read from both folders without any problem. However, when I am writing, I can only write to one of the other folder tags.  
Initially I thought it was my tag access. I then thought it might be tag write permissions in MQTT Engine. Then I tried recreating the tags in the MQTT device. I changed the folder name for PLCA to PLA and then writes started to work but when I tried writing tags with PLCB, it failed. I then changed PLCB to PLC2; I was able to write with tags from PLC2 but not tags from PLA. It is as if there is some tags clashing but I cannot determine which tags/folders/device that is causing the issue.

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**Author:** ![Munkhbat\_Munkhtulga](https://avatars.discourse-cdn.com/v4/letter/m/958977/32.png) [@Munkhbat\_Munkhtulga](https://forum.inductiveautomation.com/u/Munkhbat_Munkhtulga)\
**Post date:** [September 2, 2022, 7:52pm UTC](https://forum.inductiveautomation.com/t/mqtt-engine-tag-names-folders-clashing/63131/2 "2022-09-02T19:52:26Z")

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Hi Ngonidzashe

It would be best to contact support so an engineer can remote in and see what the issue is. You can contact support at [Support Home Page | Inductive Automation](https://www.inductiveautomation.com/support/home/)

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**Author:** ![Ngonidzashe\_Francis](https://avatars.discourse-cdn.com/v4/letter/n/65b543/32.png) [@Ngonidzashe\_Francis](https://forum.inductiveautomation.com/u/Ngonidzashe_Francis)\
**Post date:** [February 14, 2023, 3:18am UTC](https://forum.inductiveautomation.com/t/mqtt-engine-tag-names-folders-clashing/63131/3 "2023-02-14T03:18:01Z")

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This matter has been resolved. Issue was traced down to the MQTT Edge device. Once the source device connection was reconfigured, error then cleared in Ignition.