You initiated the shutdown sequence using a command line, but the proper shutdown reason text does not appear in Event Viewer.
Cause: The correct reason codes were not used. When using a command line to shutdown and document a shutdown reason, the major and minor reason codes specified in the command must be defined on the computer that is being shut down. If these codes are not defined, the resulting entry in Event Viewer will reflect the same codes that were used in the shutdown command, but the incorrect text will be displayed.
Solution: Define the reason codes on the computer to be shutdown.
See also: To add your own shutdown reasons