# CirrusLink Failing to subscribe to topic | Sparkplug B, MQTT, Mosquitto

**URL:** <https://forum.inductiveautomation.com/t/cirruslink-failing-to-subscribe-to-topic-sparkplug-b-mqtt-mosquitto/91461>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [June 6, 2024, 5:38am UTC](https://forum.inductiveautomation.com/t/cirruslink-failing-to-subscribe-to-topic-sparkplug-b-mqtt-mosquitto/91461 "2024-06-06T05:38:09Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mariusscutea](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mariusscutea/32/63385_2.png) [@mariusscutea](https://forum.inductiveautomation.com/u/mariusscutea)\
**Post date:** [June 6, 2024, 5:38am UTC](https://forum.inductiveautomation.com/t/cirruslink-failing-to-subscribe-to-topic-sparkplug-b-mqtt-mosquitto/91461/1 "2024-06-06T05:38:09Z")

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I am running Ignition version 8.1.14. I am using CirrusClient and MQTT Engine to ingest both unformatted and Sparkplug B data. I can ingest the Sparkplug B data and it is incorrectly formatted, as expected. However, when I enable the Sparkplug B namespace, the broker fails to subscribe to the topic.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/5/65a54b1080403c9a0527b17dfbc7319ad8a61923.png)

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**Author:** ![justinedwards.jle](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/justinedwards.jle/32/37854_2.png) [@justinedwards.jle](https://forum.inductiveautomation.com/u/justinedwards.jle)\
**Post date:** [June 6, 2024, 11:29pm UTC](https://forum.inductiveautomation.com/t/cirruslink-failing-to-subscribe-to-topic-sparkplug-b-mqtt-mosquitto/91461/2 "2024-06-06T23:29:58Z")

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If nobody has an answer to this, you could reach out to [support@cirrus-link.com](mailto:support@cirrus-link.com) to see if they can help.

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**Author:** ![michael.flagler](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/michael.flagler/32/26272_2.png) [@michael.flagler](https://forum.inductiveautomation.com/u/michael.flagler)\
**Post date:** [June 6, 2024, 11:33pm UTC](https://forum.inductiveautomation.com/t/cirruslink-failing-to-subscribe-to-topic-sparkplug-b-mqtt-mosquitto/91461/3 "2024-06-06T23:33:30Z")

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I'd check permissions on the spBv1.0/# wildcard topic to make sure you have permission to subscribe to it as a wildcard. Also make sure you're on the latest update of the MQTT Engine just in case there's any bug fixes.

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**Author:** ![mariusscutea](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mariusscutea/32/63385_2.png) [@mariusscutea](https://forum.inductiveautomation.com/u/mariusscutea)\
**Post date:** [June 6, 2024, 11:41pm UTC](https://forum.inductiveautomation.com/t/cirruslink-failing-to-subscribe-to-topic-sparkplug-b-mqtt-mosquitto/91461/4 "2024-06-06T23:41:28Z")

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I left the problem untouched for an hour or so and when I came back it was working, I have no answer but no problem either. Thanks all