Description
The specified Neighborhood Distance value cannot be less than 1 if the Distance Units parameter is set to Cells, or be less than the cell size of the input raster if set to a distance unit.
Solution
Increase the size of the Neighborhood Distance parameter value to at least 1 if the Distance Units parameter is set to Cells. If the Distance Units parameter is set to a linear unit, ensure that the Neighborhood Distance value is at least the cell size of the input surface raster.