The output created or modified has no features. For instance, running the Delete Features or Delete Rows tool on a feature class or table would remove all the features or rows. A common occurrence of this warning occurs when the Extent (or XYDomain) environment has been set previously for a geographically distinct area. Since the Extent environment is used to limit the features used, an inappropriately set Extent environment could exclude all features.
This warning can also be caused due to using inputs that have various invalid components such as invalid spatial reference properties, an invalid or no feature class extent, invalid or missing spatial index or invalid geometry.
If this warning is unexpected, check the Extent environment to ensure that it is appropriate for the data being used and run Check Geometry and repair any issues reported.