A minimum period of time that user is not able to change their own password. The range of acceptable values will be from 0 to 240 (or 10 days). A value of 0 disables this option. If the password expiration period is set, it must be greater than the minimum password change interval.
Sources for this description
IBM MIB copies (LibreNMS/Observium Community)IBM MIB copies (MibBrowser.online)