010044 : The value range in backlink must be between <value> and <value>.

Description

The back-link raster contains invalid values. The back-link raster should only contain values of 0 through 8, which define the direction or identify the next neighboring cell (the succeeding cell) along the least accumulative cost path from a cell to reach its least cost source.

Solution

Ensure that the raster you specify as the back-link input is valid.