Available with Standard or Advanced license.
Raster statistics of the mosaic dataset item indicate that some of the pixels in the raster have values outside of the range allowed by the mosaic dataset.
There are one or more mosaic dataset items that have statistics that are in a value range larger than that of the mosaic dataset.
In the Stretch function, make sure that the output value range matches the value range of the mosaic dataset. Using the Batch Edit Raster Functions wizard to insert or edit the Stretch function can be helpful.