10002: Layer's data source doesn't have a spatial index
The data source for this layer does not contain a spatial index, which may affect drawing performance.
Solutions
Do one of the following:
- Build a spatial index for your layer's data source. See the Add Spatial Index geoprocessing tool for more information.
Additional information
The spatial index is used to locate features when you display, edit, or query data. Therefore, an appropriate spatial index is important, especially when working with large datasets.
It is important to build a spatial index for your datasets. This significantly increases display performance as you navigate around your map.
Learn more about modifying spatial indexes