Adjustment tickets when exiting from the Metro turnstiles
All tickets must be stamped even when leaving the metro stations. Passengers whose tickets have expired or which do not have the correct fare can purchase an adjustment ticket using the vending machines inside the turnstile line. Adjustment tickets are valid exclusively for stamping when you leave the metro. They cannot, for any reason, be used to continue your journey.
Passengers who have a ticket purchased using the ATM APP or with the SMS Ticketing service can stamp when they leave by moving their smartphone close to the turnstiles with QR Code reader, or print their ticket by entering PNR into the vending machines located inside the turnstile and stamp their printed ticket.
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