When registering commands to be executed from policy settings or from the network map, you cannot use Japanese characters in the command file name or in the command arguments.
If you need to run a command that has a Japanese file name, prepare a separate batch file or shell script that has a file name consisting only of alphanumeric characters. From within that script, launch the command that uses the Japanese file name. Then register the batch file or shell script as the command to be executed.