---
title: Add, rename or delete a Boss’nX schema layer
description: "Organize a Boss’nX schema into layers: add an empty layer, rename or delete it from the editor’s Layers menu, then save the schema and check the result."
canonical: https://wiki.can-nx.com/en/guides/boss-schema-layers/
language: en
product: Boss’nX
audience:
  - administrateur
  - installateur
context: "Boss’nX, schema editor of a supervision on a computer: Layers menu"
---

# Add, rename or delete a Boss’nX schema layer

Context: Boss’nX, schema editor of a supervision on a computer: Layers menu

A Boss’nX schema can contain several layers, each with its own elements, dimensions and background. In the editor, the **Layers** menu lets you add an empty layer, rename it or delete it; these changes remain a draft until the schema is saved.

For administrators and installers who edit the schemas of a supervision, opened directly or from a hypervision. To only view existing layers, use [the Schemas page](https://wiki.can-nx.com/en/guides/boss-schemas-consult/).

## Before you start

- Your role grants **View schemas** and **Edit schemas**. Check this in [the role capabilities](https://wiki.can-nx.com/en/guides/boss-role-capabilities/) rather than relying on the role name alone.
- You are working on a computer. If the controls remain hard to reach, use a wider screen.
- The schema already exists. A new schema starts with a first layer; to create it, follow [the name and save guide](https://wiki.can-nx.com/en/guides/boss-schema-editor-save/).

## Open the editor’s Layers menu

1. From the Dashboard of the supervision concerned, open **Schemas** in the header bar, or **Menu → Schemas**.
2. Expand the left panel if needed. Hover over the right row, open the three-dot **Actions** menu, then **Edit schema**. Wait until the expected name and content are loaded.
3. At the bottom right of the editor, find the name of the active layer and, next to it, the round button with a **stacked sheets** icon, tooltip **Layers**.
4. Click **Layers** to open the list. If a temporary message covers this button, wait for it to disappear before clicking.

In the list, clicking a layer name selects it and closes the menu. The layer shown in the editor changes, but the prepared changes still need to be saved. To find an element among the layers of the drawing, use the [Issues](https://wiki.can-nx.com/en/guides/boss-schema-validation/) and [Used datapoints](https://wiki.can-nx.com/en/guides/boss-schema-used/) panels.

## Add a layer

1. Open **Layers**.
2. Click **+ New layer**, tooltip **Create a new layer**.
3. The menu closes and the new layer becomes active. It is empty and has a name such as **Layer 2**, to adapt. It takes the dimensions of the current canvas, without copying the elements of the previous layer.
4. Rename it if necessary, then save the schema.

To customize this layer, see [the canvas dimensions](https://wiki.can-nx.com/en/guides/boss-schema-canvas/) and [background colors, patterns and images](https://wiki.can-nx.com/en/guides/boss-schema-background/). For a navigation link to open this layer, see [configuring its destination](https://wiki.can-nx.com/en/guides/boss-schema-link-destination/).

## Rename a layer

1. Open **Layers** and find the row you want.
2. To the right of this row, click the **pencil**, tooltip **Rename**.
3. Replace the name in the field, for example with **Reception** (fictitious example).
4. Press **Enter** to apply this name to the draft. Leaving the field also applies a non-empty name; **Esc** cancels the current entry.
5. Check the name in the list, then save the schema.

Leading and trailing spaces are removed. An empty field, or one containing only spaces, leaves the previous name in place. This menu offers no layer description: **Description (optional)**, at the top of the left panel, concerns the schema.

## Delete a layer

1. Open **Layers** and check the name of the row to remove.
2. Click the **trash can** to the right of this row, tooltip **Delete**.
3. The **Delete layer?** box asks for confirmation and states **This action cannot be undone.** Click **Cancel** to keep the layer, or **Delete** to remove it.
4. The layer and its elements disappear from the draft. If it was the active layer, a remaining layer is selected.
5. Save the schema to apply the deletion.

The last layer of a schema cannot be deleted: its trash can is disabled. To delete the whole schema, follow [the schema list actions](https://wiki.can-nx.com/en/guides/boss-schemas-manage/).

If someone else modified this layer before your save, a conflict window can offer **Keep the server version** or **Delete anyway**: follow [choosing conflicting versions](https://wiki.can-nx.com/en/guides/boss-schema-conflicts/). The deletion is only saved after a successful save, even if the layer has already disappeared from the draft.

## Save the changes

1. Click **Save** in the left panel.
2. Review **Save schema?**, then confirm with **Save**. If warnings or conflicts appear, read them before continuing.
3. During **Saving in progress**, do not close or refresh the page. Wait for the result and check the layer summary.

To leave without applying the changes still pending, use [the editor exit choices](https://wiki.can-nx.com/en/guides/boss-schema-editor-save/). **Leave without saving** does not bring back a layer whose deletion has already been saved.

## Check the result

1. Open **Schemas** in the header bar or in the **Menu**, then explicitly choose the schema in the left panel.
2. Expand its layers with the chevron to the left of its name, then check the name and presence of the layer you want.
3. To check again in the editor, open **Actions → Edit schema** on the right row, wait for it to load, then click **Layers** at the bottom right.

The **Layers** button belongs to the editor; on the viewing page, the layers appear under the schema name, in the left panel.

## Troubleshooting

| Observation | Action |
| --- | --- |
| A message covers the **Layers** button | Wait for it to disappear, then click. |
| The trash can is disabled | The schema has only one layer left, which cannot be deleted. |
| The new name is not applied | Type a non-empty name, then press **Enter**. **Esc** cancels the entry. |
| A conflict window opens when saving | Follow [choosing conflicting versions](https://wiki.can-nx.com/en/guides/boss-schema-conflicts/). |
| Controls hard to reach | Use a wider screen. |

If an expected layer still cannot be found after these checks, contact support@can-nx.com with the schema, the layer name, the steps taken and the result observed.

French labels: **Menu → Schémas**, **Actions → Modifier le schéma**, **Calques**, **+ Nouveau calque**, **Créer un nouveau calque**, **Renommer**, **Supprimer**, **Supprimer le calque ?**, **Annuler**, **Sauvegarder**, **Sauvegarder le schéma ?**.