Hi Saravanan,
What you are looking for is , Password Expiration Grace Period.
You can achieve this by setting property "Expiration Grace" in APS.cfg file.
Details about this property below (copied from APS.cfg file )
///////////////////////////////////////////////////////////////////////
// Once password expiration is reached, we no longer treat password
// change as optional (it becomes required). How many days AFTER the
// password expires do we actually disable the user.
//
// The PASSWORD SOFT EXPIRATION DATE, plus this number of days, is the
// PASSWORD HARD EXPIRATION DATE.
//
// Prior to version 2.0, APS did not support this feature.
//
// If you do not wish users to ever be disabled because of password
// expiration, set this to a very high number. Then, when the password
// expires, the user will be in a force password change state every
// time the user logs in.
//
// If this value is zero, then passwords will immediately expire when
// the password soft expiratsion date occurs (subject to Grace Logins,
// below).
//
// This setting supports overrides.
///////////////////////////////////////////////////////////////////////
Expiration Grace=30
Hope this helps.
Regards,
Ujwol Shrestha