This guide provides solutions to common problems you might encounter while using
data layers in your projects.

## Data layer not visible on the map

If a data layer is not visible on the map, it may be due to one of the
following:

- **Check visibility:** Verify that **Show feature** is selected next to the layer in the left-hand panel.
- **Adjust opacity:** Drag the opacity slider for the layer to the right to make it more opaque.
- **Zoom level:** Some layers may only be visible at certain zoom levels. Try zooming in or out.
- **Geographic coverage:** Verify that your current view is within the layer's data coverage area.
- **Upgrade status:** If it's a premium layer, confirm your Professional or Professional Advanced plan is active.

## Layer unavailable in a project (warning icon)

A warning icon indicates the layer
is either temporarily unavailable, has been deprecated, or requires an upgrade
to use.

- **Temporarily unavailable:** The publisher is working on the layer. It should appear automatically when fixed.
- **Deprecated:** The layer is no longer supported. You can delete it from your project. Look for recommendations in the data catalog for similar data.
- **Upgrade required:** If it's a premium layer, and your trial ended or plan was canceled, the layer is no longer accessible. Upgrade your plan to regain access.

## Cannot add a layer to a project

- **Login:** Verify you are logged into Earth. The data catalog requires you to be logged in to add layers.
- **Map projects:** Verify you're working in a map project saved in Google Drive. Layers are not available in local KML files.
- **Internet connection:** Verify you have a stable internet connection.