Role and user invitations have an expiration time. When the time expires, the invitation is cancelled. In additionBefore expiration, invitations have a re-notification time, after which the invitee will be reminded by email, see Reminder periods.
All configuration settings that represent time durations will be of the form 7d 13h 30m 15s, which means 7 days, 13 hours, 30 minutes, and 15 seconds. It is not necessary to specify all the components of the expression; for example, 5h 10s means 5 hours and 10 seconds.
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