---
title: "Boss’nX dashboard schemas: troubleshooting and frequently asked questions"
description: "Layer coming back, zoom not kept, plan cut off, Clear or Delete, schema not loading: answers about schema blocks on the dashboard of a Boss’nX supervision."
canonical: https://wiki.can-nx.com/en/guides/boss-dashboard-schema-help/
language: en
product: Boss’nX
audience:
  - utilisateur
  - administrateur
  - installateur
context: "Boss’nX, supervision dashboard: viewing and settings of schema blocks"
---

# Boss’nX dashboard schemas: troubleshooting and frequently asked questions

Context: Boss’nX, supervision dashboard: viewing and settings of schema blocks

Block added without a drawing, old layer coming back, changing zoom, plan cut off, Clear or Delete, schema that does not load: here are the answers to common questions about the schema blocks on the dashboard of a Boss’nX supervision. The full procedures are in [reading a schema](https://wiki.can-nx.com/en/guides/boss-dashboard-schema/) and [configuring its block](https://wiki.can-nx.com/en/guides/boss-dashboard-schema-config/).

## Does Add schema create a new drawing?

No. In **Visible widgets**, **Add schema** creates a block in the dashboard. Then open its **Settings** to select a schema that is already available. A new drawing is created from the schemas list, with the **+** button whose tooltip is **Create schema**: see [schema management](https://wiki.can-nx.com/en/guides/boss-schemas-manage/). If the expected drawing is not in the list after clearing the search, have the supervision and the available schemas checked.

## Why does the old layer come back after a change with Layers?

The **Layers** button, at the bottom right of the block, changes the view for the current viewing only. To set the starting layer, enter edit mode, open **Settings** on the block, choose the **Layer** field, then finish with **Finish editing**. Reopen the dashboard to check this choice. The details are in [the configuration procedure](https://wiki.can-nx.com/en/guides/boss-dashboard-schema-config/).

## Why is the layer found after Finish editing not the one I chose?

Check that you are looking at the same block in the same supervision, then reopen its settings once and read the **Layer** field again. If you have already done so or if the result remains unexpected, contact support stating the schema, the expected layer and the one found in the field.

## Why doesn’t my zoom stay at 100%?

The drawing is reframed automatically each time it opens. While viewing, click the percentage, **Reset zoom**, to return to 100%. **Fit to view** recenters the drawing and adapts the zoom to the block. A different zoom on reopening is therefore normal: it affects neither the schema association nor the saved starting layer.

## Why does Fit to view leave part of the plan outside the frame?

The zoom is limited to between 20% and 300%. On a very wide plan, the 20% minimum can be reached before the whole drawing fits in the block. Then move the view on a computer or use a wider screen, as described in [the viewing gestures](https://wiki.can-nx.com/en/guides/boss-dashboard-schema/). If the elements you are looking for remain inaccessible, report it to support with the schema, the layer and the screen size.

## What if the layer name hides the zoom buttons on a phone?

Use a wider screen: the layer name can take up space at the bottom of the block. Viewing the plan requires no change to components. If the controls remain inaccessible on a wide screen, report it to support with a screenshot without sensitive data.

## Does closing the settings cancel my choice?

No. The **Close settings** cross closes the panel and keeps the prepared choices. To keep them, use **Finish editing**. To abandon them, use **Restore original layout**: it discards all the dashboard changes since the start of this editing session.

## What is the difference between Clear and Delete?

**Clear**, in the **Schema** choice, removes the prepared association and keeps an unconfigured block. **Delete**, at the bottom of the panel, removes the block from the dashboard without an intermediate confirmation. In both cases, **Restore original layout** returns to the state at the start of editing as long as it has not been saved. Removing a block does not delete the schema drawing: see [remove a block](https://wiki.can-nx.com/en/guides/boss-dashboard-schema-config/).

## Why is the Layer field not shown?

First select the schema in the block’s **Settings** and wait for it to load. The **Layer** field appears if the schema has several layers. With a single layer, the **Layers** viewing button is also disabled. If you expect several layers, report it to support specifying the schema and the context.

## What if the schema still does not load?

If **Unable to load schema.** remains displayed although you have already checked the supervision and reopened the dashboard, contact support. Avoid deleting or recreating elements because of this message alone.

## Contact support

Write to support@can-nx.com with: Boss’nX, dashboard schema, the supervision, the expected schema and layer, the layer found, the displayed message, the approximate screen size and the steps already taken. A screenshot without sensitive data helps identify the block.