sco unix No utmp entry. You must exec "LOGIN" from the lowest level "sh"

when i use a user telnet the sco unix server,with the error is No utmp entry. You must exec "LOGIN" from the lowest level "sh".just do this can solution this error

The problem comes if utmp or wtmp file becomes corrupted . You need to initialize these and reboot the system to correct the error.

These files are log files and can be initialized without affecting the system, as long as you reboot the system after truncating the files. Perform these steps:

1. Bring the system into System Maintenance mode.

2. Make copies of the files /etc/utmp, /etc/utmpx, /etc/wtmp, and
/etc/wtmpx before proceeding with the next step.

3. Delete the contents of these files by executing the following
commands:

# >; /etc/utmp
# >; /etc/wtmp
# >; /etc/utmpx
# >; /etc/wtmpx

4. Shutdown the system:
# shutdown -y -g0
Restart the system