# Query Regarding Tag ID (UUID) Storage Location in Ignition 8.3

**URL:** <https://forum.inductiveautomation.com/t/query-regarding-tag-id-uuid-storage-location-in-ignition-8-3/116789>\
**Category:** Ignition Early Access\
**Tags:** ignition83\
**Created:** [August 14, 2026, 6:08am UTC](https://forum.inductiveautomation.com/t/query-regarding-tag-id-uuid-storage-location-in-ignition-8-3/116789 "2026-08-14T06:08:00Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![Kanungoankit](https://avatars.discourse-cdn.com/v4/letter/k/eada6e/32.png) [@Kanungoankit](https://forum.inductiveautomation.com/u/Kanungoankit)\
**Post date:** [August 14, 2026, 6:08am UTC](https://forum.inductiveautomation.com/t/query-regarding-tag-id-uuid-storage-location-in-ignition-8-3/116789/1 "2026-08-14T06:08:00Z")

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Hi,

We are currently working on a project that requires access to the Tag ID (UUID) in Ignition 8.3.

In Ignition 8.1, we understand that tag UUIDs are stored in the Config.IDB database, and we have been able to retrieve them successfully from there.

However, in Ignition 8.3, tag configurations appear to be file-based, and the Tag Config tables are no longer use in the Config.IDB database. As a result, we have been unable to locate the Tag ID (UUID). We assume it may now be stored in a different file or location.

Could you please help us identify where tag UUIDs are stored in Ignition 8.3 and share the relevant file names and storage locations?

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/c/ac139ce7ac907b5be044486d3207b213a95c19ab.png)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/2/2/220ee79a019817b245bb23039d38215611b3157e.png)

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<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [August 14, 2026, 12:20pm UTC](https://forum.inductiveautomation.com/t/query-regarding-tag-id-uuid-storage-location-in-ignition-8-3/116789/2 "2026-08-14T12:20:47Z")

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Hmmm. Very good question. Not in `tags.json`, and not in the persistence value store.

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [August 14, 2026, 12:45pm UTC](https://forum.inductiveautomation.com/t/query-regarding-tag-id-uuid-storage-location-in-ignition-8-3/116789/3 "2026-08-14T12:45:38Z")

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They aren't stored anywhere now, they're computed from the path, something along the lines of:

```java
public Serializable newId(Serializable name) {
  MessageDigest md = MessageDigest.getInstance("MD5");
  md.update(name.toString().getBytes(UTF_8));
  return UUID.nameUUIDFromBytes(md.digest()).toString();
}

```

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<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [August 14, 2026, 12:49pm UTC](https://forum.inductiveautomation.com/t/query-regarding-tag-id-uuid-storage-location-in-ignition-8-3/116789/4 "2026-08-14T12:49:08Z")

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Interesting. So not fixed if a tag is renamed.

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [August 14, 2026, 12:49pm UTC](https://forum.inductiveautomation.com/t/query-regarding-tag-id-uuid-storage-location-in-ignition-8-3/116789/5 "2026-08-14T12:49:42Z")

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Correct. Compared to 8.1, the UUID is not stable across rename or move operations.

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<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [August 14, 2026, 12:53pm UTC](https://forum.inductiveautomation.com/t/query-regarding-tag-id-uuid-storage-location-in-ignition-8-3/116789/6 "2026-08-14T12:53:05Z")

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> [@Kanungoankit](#):
>
> We are currently working on a project that requires access to the Tag ID (UUID) in Ignition 8.3.

Probably want to reconsider this.

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<div class="post-metadata">

**Author:** ![Kanungoankit](https://avatars.discourse-cdn.com/v4/letter/k/eada6e/32.png) [@Kanungoankit](https://forum.inductiveautomation.com/u/Kanungoankit)\
**Post date:** [August 17, 2026, 5:19am UTC](https://forum.inductiveautomation.com/t/query-regarding-tag-id-uuid-storage-location-in-ignition-8-3/116789/7 "2026-08-17T05:19:51Z")

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Understood. So, if we want to use UUIDs, we'll need to implement our own logic. Thanks for the information @Kevin.Herron

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<div class="post-metadata">

**Author:** ![Kanungoankit](https://avatars.discourse-cdn.com/v4/letter/k/eada6e/32.png) [@Kanungoankit](https://forum.inductiveautomation.com/u/Kanungoankit)\
**Post date:** [August 17, 2026, 5:20am UTC](https://forum.inductiveautomation.com/t/query-regarding-tag-id-uuid-storage-location-in-ignition-8-3/116789/8 "2026-08-17T05:20:13Z")

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correct 🙂