Defines the period of time in weeks that a user will not be able to reuse a password. In setting the histexpire attribute, it ensures that a user cannot reuse a password within a set period of time.
Solution
In /etc/security/user, set the default user stanza histexpire attribute to be greater than or equal to 13- chsec -f /etc/security/user -s default -a histexpire=13 This means that a user will not be able to reuse any password set in the last 13 weeks.