41333b0d_I_v1_Documentation___Challonge__2
[0] Abort Check-in [1] POST [2] 
When your tournament is in a 'checking_in' or 'checked_in' state, there's no way to edit the tournament's start time (start_at) or check-in duration (check_in_duration). You must first abort check-in, then you may edit those attributes. Makes all participants active and clears their checked_in_at times. Transitions the tournament state from 'checking_in' or 'checked_in' to 'pending'
Challonge API v1 Documentation - Challonge
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