JUMP TOIntegrationRequirementsGetting StartedWhat You'll NeedInitialise WidgetShow Finance OffersEligibility CheckStart CheckoutComplete CheckoutConfirm PaymentReturning CustomersRefund CustomersSecond LenderAdding NewpayeCommerce ModulesEnvironmentsGoing LiveAPIEndpointsAuthenticate credentialspostInitialise FlexPay WidgetpostVerify & start checkoutpostRetrieve checkoutgetReturns public keygetVerify messagepostReturns statusgetUpdate transactionpatchappendicesAPI Error CodesTile PositionsupportContactVerify & start checkoutpost https://dummy-api.staging.host.com/verify-basketVerify the basket is valid for FlexPay products.