If you work on custom DSC resources then debug mode is very handy for you because you may need to re-import your updated DSC resource again and again. Without re-import (force import) the DSC uses cache.
How to set DebugMode:
Signifies that DebugMode is False and not applicable.
Enforce the resource module to be reloaded instead of using the cache. This is similar to "true" value in previous versions.
Helps in debugging DSC …Read More