The SITE command was specified with the DEBUG parameter. The FTP server does not allow users to change the debug (general tracing) options with the SITE command.
The DEBUG parameter is ignored.
If the system programmer changes the FTP server as stated below, the user must establish a new FTP session after the server is restarted before issuing SITE DEBUG.
If users are to be allowed to change the debug options with the SITE command, add the DEBUGONSITE TRUE statement to the FTP server's FTP.DATA file and restart the FTP server.