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'''Trigger tab:'''
Time:-
*Trigger Event = Check-in
*Trigger Time = -2 (the number of days before check-in you want to sent the code or link)
*Trigger Window = 2
Booking Souce :-
*Booking Source = All
*Booking Status = All but not cancelled
Booking Conditions:-
*Group bookings = Trigger all on master
*Info Code = LOCKSTATE_PIN or NUKI_PIN or CHEKIN_URL (select the appropriate Booking Info Code for the service you use)