# Referencing Sparkplug B tags goes to Bad\_Stale after a while

**URL:** <https://forum.cirrus-link.com/t/referencing-sparkplug-b-tags-goes-to-bad-stale-after-a-while/827>\
**Category:** MQTT Modules\
**Tags:** mqtt-engine\
**Created:** [December 3, 2025, 1:05pm UTC](https://forum.cirrus-link.com/t/referencing-sparkplug-b-tags-goes-to-bad-stale-after-a-while/827 "2025-12-03T13:05:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jasperlg](https://avatars.discourse-cdn.com/v4/letter/j/0ea827/32.png) [@jasperlg](https://forum.cirrus-link.com/u/jasperlg)\
**Post date:** [December 3, 2025, 1:05pm UTC](https://forum.cirrus-link.com/t/referencing-sparkplug-b-tags-goes-to-bad-stale-after-a-while/827/1 "2025-12-03T13:05:09Z")

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Hi all,

We’re having an issue with reference tags, which are referencing Sparkplug B tags.

The Sparkplug B tag did not change in over a month, so it’s older data. However, the quality is still good. However, when we try to reference those tags in other tag providers, the quality changes to Bad\_Stale, and after restarting the reference tags, the quality changes to uncertain.

Anyone experienced anything like this before?  
I don’t know for sure that this is something specific to MQTT Engine, but I can only try.

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**Author:** ![segan4](https://avatars.discourse-cdn.com/v4/letter/s/f17d59/32.png) [@segan4](https://forum.cirrus-link.com/u/segan4)\
**Post date:** [December 4, 2025, 1:22am UTC](https://forum.cirrus-link.com/t/referencing-sparkplug-b-tags-goes-to-bad-stale-after-a-while/827/2 "2025-12-04T01:22:01Z")

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Hi Jasper,  
I tried to reproduce this but so far have been unable to. Can I have you open a ticket with us? [Contact us - Cirrus Link](https://cirrus-link.com/contact-us/)  
Thanks,  
Segan