JUMP TOWpay NPP PayTo Merchant APIPaymentsCheckout SessionpostPayment SessionpostSession DetailsgetMake PaymentpostPayment DetailsgetInstrumentsInstrument SessionpostCancel InstrumentpostInstrument DetailsgetRefundsMake RefundpostRefunds DetailsgetWallet ServicesBuyer WalletgetMake Refundpost https://uat-api.wpay.com.au/wpay-npp-payto/merchant-gateway/merchants/{merchantId}/payments/{paymentId}/refundUsed to make full or partial refunds.CallbacksRefund.Completedpost<MerchantWebhooksUrl>Refund.Rejectedpost<MerchantWebhooksUrl>