Unix not a recognized terminal type

After you log into a Unix server (AIX for example).
You get the error about terminal type when you try to vi or example below when try to edit crontab.

$ crontab -e
ex: 0602-108 xterm-256color is not a recognized terminal type.
  [Press return to continue]

# check your current TERM value

$ env | grep TERM
TERM=xterm-256color

# set to new TERM value to fix
export TERM=vt100

You will need to add to your startup file to something like below:
$ cat .profile



PATH=/usr/bin:/etc:/usr/sbin:/usr/ucb:$HOME/bin:/usr/bin/X11:/sbin:.

export PATH
export TERM=vt100

if [ -s "$MAIL" ]           # This is at Shell startup.  In normal
then echo "$MAILMSG"        # operation, the Shell checks
fi                          # periodically.