There is no spatial reference associated with this data.
Use the Define Projection geoprocessing tool to define an appropriate spatial reference for your data.
If your layer is a query layer, modify the query layer directly to define a spatial reference.
A spatial reference is required to display your data in the correct geographic location. Without a spatial reference, your data may display in an incorrect location or not at all.
How to identify the coordinate system of a map layer—Each map layer has a data source (such as a feature class, raster dataset, and so on). Right-click a layer in the Contents pane and click Properties. Next, click the Source tab and expand the Spatial Reference panel. The coordinate system details show on this panel.