EXPIRE_LOCK_AFTER_DAYS is an optional 5-character numeric field.

If the user has to change their password after a set amount of days, this field will indicate how many days after that due date the user has before they are locked out of the system. For example, if the Password Expires-Dys is set for 30 and the Lock After Expires-Dys is set for 90, this means that if the user does not log in for 90 days after the password expiry date, they will be locked out of the system. At that point they will need to call their system administrator to be allowed back in.