---
title: Create, edit or delete a custom datapoint tag in Boss’nX
description: Create a custom tag to classify Boss’nX datapoints, change its name, category or description, or delete its entry from the project tag catalog.
canonical: https://wiki.can-nx.com/en/guides/boss-tags-manage/
language: en
product: Boss’nX
audience:
  - administrateur
  - installateur
context: "Boss’nX: Menu → Datapoint tags of a supervision, with the component management right"
---

# Create, edit or delete a custom datapoint tag in Boss’nX

Context: Boss’nX: Menu → Datapoint tags of a supervision, with the component management right

In Boss’nX, tags classify the datapoints of a supervision. The project’s custom tags complement the standard catalog: you create their entry (name, category, description), edit it or delete it from **Menu → Datapoint tags**. Standard entries, marked **Read-only**, offer neither editing nor deletion.

Intended for the administrator or installer who has the component management right. The entry alone does not assign the tag to any datapoint: for that, then follow [datapoint assignment](https://wiki.can-nx.com/en/guides/boss-tags-assign/).

## Create a custom tag

1. Open **Menu → Datapoint tags** and check the **Datapoint tags** title. The catalog’s search and filters are described in [viewing tags](https://wiki.can-nx.com/en/guides/boss-tags-consult/).
2. Click **Create tag**. The **New tag** window opens.
3. Fill in **Tag name**, 100 characters maximum. Choose a name that is understandable and distinct from those already present.
4. Choose **Category**. **Personnalisé** (custom) is offered by default; you can also choose a standard category, such as **Températures**, **États** or **Mesures**.
5. If useful, fill in **Description (optional)**, 500 characters maximum.
6. Click **Create** and wait for the window to close. The detail of the created tag is selected.

Fictional example: **North workshop measurement**, category **Mesures**, description **Measurements monitored in the north workshop**. To give it to datapoints, then use **Assign datapoints** in the tag’s detail.

## Edit a tag’s entry

1. Select the tag in the list and check the title of its detail.
2. Click **Edit**. The **Edit tag** window opens.
3. Adjust **Tag name**, **Category** or **Description (optional)**, with the same limits as at creation. To remove the description, empty this field.
4. Click **Save**.

The entry is not used to choose which datapoints carry the tag: to change its members, use [targeted assignment](https://wiki.can-nx.com/en/guides/boss-tags-assign/).

When creating as when editing, **Cancel**, **Escape** or a click on the dimmed background closes the window without saving, as long as you have not submitted. During the save, these closing actions are suspended: wait for the result.

## Delete a tag’s entry

1. In the tag’s detail, check **Assigned datapoints** and **Linked role rules**. If the rules are unavailable or if the consequences remain uncertain, contact support before continuing.
2. Click **Delete**.
3. In **Delete tag "…"?**, check the name. If uses are listed, read **Affected datapoints (…)** and **Affected rules (…)**, scrolling through the lists if needed.
4. Click **Delete tag** to confirm, or **Cancel** to keep the entry.
5. Wait for the window to close.

Deleting the entry does not remove the tag from the datapoints or the rules that reference it: the window warns that these references keep working, but without a label or category. To remove an assignment, use [the removal procedure on the datapoints](https://wiki.can-nx.com/en/guides/boss-tags-assign/). Even if no use is displayed, check the consequences on the project’s rules.

This path offers no restore button. During the deletion, wait for the result: **Cancel**, **Escape** and the dimmed background do not close the window while the request is in progress.

## Check the result

- After a creation or an edit, check the name, category and description in the detail, then the associated datapoints.
- After a deletion, check that the entry has disappeared from the project catalog.

## Troubleshooting

| Message or symptom | Action |
| --- | --- |
| **Create** stays grayed out | Fill in **Tag name**: an empty name disables the button. |
| **The name must contain at least one letter or digit** | Choose a name like the one in the example. |
| **A tag with this name already exists: …** or **This tag already exists in the standard tags: …** | Select the existing tag or choose a distinct name. |
| **Could not save the tag** | The window stays open. Check the name and any duplicate messages, then try again. |
| **Could not delete the tag** | Check whether the entry is still present in the catalog before starting again. |

If the error persists, if the expected entry does not appear after reopening the catalog or if the result of a deletion remains uncertain, contact support@can-nx.com with the supervision, the tag name and the displayed message. Do not send any password or access secret.

French labels: **Créer un tag**, **Nouveau tag**, **Nom du tag**, **Catégorie**, **Description (optionnel)**, **Créer**, **Modifier**, **Enregistrer**, **Supprimer**, **Supprimer le tag**, **Annuler**. The standard categories and **Personnalisé** remain in French.