JUMP TOAffirm APIIntroductionAuthenticationErrorsMetadataData typesMerchant Transaction APITransaction API EndpointsTransactions APIList TransactionsgetAuthorize TransactionpostList Transaction EventsgetRead TransactiongetUpdate TransactionpostCapture TransactionpostRefund TransactionpostVoid TransactionpostCheckout APIThe checkout objectThe merchant objectThe discount objectThe metadata objectThe item objectThe customer objectThe itinerary objectShipping & billing objectsName objectAddress objectCheckoutRead CheckoutgetStorepostDirectpostUpdate CheckoutpostResend CheckoutpostCards APICards APIRead CardgetCancel CardpostFinalize a cardpostCharges APICharges APIAuthorize ChargepostList ChargesgetList charge eventsgetRead ChargegetCapture ChargepostRefund ChargepostUpdate ChargepostVoid ChargepostProgressgetVoid Transactionpost https://sandbox.affirm.com/api/v1/transactions/{id}/voidVoids an entire transaction.