# Transaction Group OPC Tag Stopped Updating

**URL:** <https://forum.inductiveautomation.com/t/transaction-group-opc-tag-stopped-updating/40179>\
**Category:** Ignition\
**Tags:** ignition80\
**Created:** [October 30, 2020, 7:17pm UTC](https://forum.inductiveautomation.com/t/transaction-group-opc-tag-stopped-updating/40179 "2020-10-30T19:17:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![catherine.fowler](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@catherine.fowler](https://forum.inductiveautomation.com/u/catherine.fowler)\
**Post date:** [October 30, 2020, 7:17pm UTC](https://forum.inductiveautomation.com/t/transaction-group-opc-tag-stopped-updating/40179/1 "2020-10-30T19:17:32Z")

</div>

I’m running Ignition 8.0.9 and have an application that’s basically just acting as a data logger. I have multiple transaction groups storing OPC tags to a database that worked as desired when I first configured it. However, when I checked back later, the data stored for specifically one of my tags was stuck at 1064.375, even though the OPC tag it was pointing to was continuing to change. I double and triple-checked the configuration but could find nothing wrong.

I ended up deleting the OPC tag in the tag browser (despite it appearing to be fine and actively updating) and recreated an **identical** OPC tag with the same name/path. Having changed **nothing** in the transaction group setup, it then proceeded to work fine with the recreated tag.

Does anybody know what caused this and how it can be avoided in the future?

 ![TransactionGroupMismatch](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/3/43704a1c78293d4fd2535f84608dba2ba0b81b46.jpeg)

Thanks!