Description
The input segmented raster must have either 1 band or 3 bands. The current input raster does not meet this requirement.
This may occur if you have the wrong input or if the input was from third-party software.
Solution
Make sure you have the correct input raster. If your input is correct and still not the correct number of bands, you can use the Composite Bands tool to create a raster with the appropriate number of bands.