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    Pre-Authorizations
    A pre-authorization enables you to authorize a payment when the final amount is
            unknown. It is typically used for lodging, auto rental, e-commerce, and restaurant
            transactions.
For a pre-authorization: 
- The authorization amount must be greater than zero.
- The authorization must be submitted for capture within 30 calendar days of its request.
- When you do not capture the authorization, you must reverse it.In the U.S., Canada, Latin America, and Asia Pacific, Mastercard charges an additional fee for a pre-authorization that is not captured and not reversed.In Europe, Russia, Middle East, and Africa, Mastercard charges fees for all pre-authorizations.
- Chargeback protection is in effect for 30 days after the authorization.