Information
Defines the minimum number of special characters in a password.
In setting the minspecialchar attribute, the password must contain a special character when it is changed by the user.
Solution
In /etc/security/user, set the default user stanza minspecialchar attribute to 1-
chsec -f /etc/security/user -s default -a minspecialchar=1
This means that there must be at least 1 special character within an 8 character user password.