> For the complete documentation index, see [llms.txt](https://docs.cloudeka.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cloudeka.ai/guidance-for-enterprise/deka-metal/deka-metal-deka-registry/detail-registry/tag-immutability.md).
# Tag Immutability
On the Tag Immutability tab you can add, activate or deactivate tags, and delete tabs that are no longer used.
## **Create Rule**
Adding the Immutability Tag is a tag rule for the project. The following are the steps for adding tags to immutability:
* Select the Tag Immutability tab, and click the Add Rule button.
* The Add Tag Immutability Rule window appears, in the For the repositories section select matching or excluding according to your needs. Click the Add button to add tags.
* The tag is registered in the Tag Immutability table list.
## **Enable/Disable Rule**
You can deactivate or activate tags that you no longer use. If you want to disable tags that are no longer used. Press the More button on the tag that you want to deactivate and select Disable, whereas if you want to activate the tag that will be used in More, click Enable.
Click the Confirm button to continue the process.
In the Tag Immutability table, you can see that the icon changes to an exclamation mark if the tag is disabled, while the icon changes to a check mark if the tag is enabled.
## **Delete Rule**
The following are the steps for removing the Immutability Tag in the Deka GPU Service in the Cloudeka Portal Service. On the Tag Immutability tab and select the tag you want to delete.
The Delete Rule window appears, click the Confirm button to continue the process.