JUMP TOAffirm APIIntroductionAuthenticationErrorsMetadataData typesTransactions APITransactions APIList TransactionsgetAuthorize TransactionpostList Transaction EventsgetRead TransactiongetUpdate TransactionpostCapture TransactionpostRefund TransactionpostVoid TransactionpostList Settlement EventsgetList Settlement Event SummariesgetCheckout APIThe Checkout ObjectThe Merchant ObjectThe Customer ObjectThe Metadata ObjectThe Itinerary ObjectName ObjectAddress ObjectShipping & Billing ObjectsThe Discount ObjectThe Item ObjectCheckoutRead CheckoutgetStorepostDirectpostUpdate CheckoutpostCheckout instrumentgetResend CheckoutpostCards APICards APIThe card objectThe billing objectName objectAddress objectThe response objectRead CardgetCancel CardpostFinalize a cardpostUpdate Checkoutpost https://api.global.affirm.com/api/v2/checkout/{checkout_id}/updateUpdate a checkout.