JUMP TOAffirm APIIntroductionAuthenticationErrorsData TypesMerchant Transaction APITransaction API endpointsTransactions APIList TransactionsgetAuthorize TransactionpostList Transaction EventsgetRead TransactiongetUpdate TransactionpostCapture TransactionpostRefund TransactionpostVoid TransactionpostCheckout APICheckoutRead CheckoutgetStorepostDirectpostUpdate CheckoutpostCheckout instrumentgetResend CheckoutpostThe checkout objectThe merchant objectThe discount objectThe metadata objectThe item objectThe customer objectThe itinerary objectShipping & billing objectsName objectAddress objectCards APICards APIRead CardgetCancel CardpostFinalize a cardpostProgressgetCharges APICharges APIAuthorize ChargepostList ChargesgetList charge eventsgetRead ChargegetCapture ChargepostRefund ChargepostUpdate ChargepostVoid ChargepostProgressgetVoid Transactionpost https://sandbox.affirm.com/api/v1/transactions/{transaction_id}/voidVoids an entire transaction.