# Integration Guide ## Integration Guide - [INTEGRATION GUIDE (V4.24)](https://guides.gitbook.io/integrationguide/readme.md) - [Changelog](https://guides.gitbook.io/integrationguide/readme/changelog.md) - [Introduction to our Gateway](https://guides.gitbook.io/integrationguide/getting-started/introduction-to-our-gateway.md) - [Terminology](https://guides.gitbook.io/integrationguide/getting-started/introduction-to-our-gateway/terminology.md) - [Integration Methods](https://guides.gitbook.io/integrationguide/getting-started/introduction-to-our-gateway/integration-methods.md) - [Integration Libraries](https://guides.gitbook.io/integrationguide/getting-started/introduction-to-our-gateway/integration-libraries.md) - [Security and Compliance](https://guides.gitbook.io/integrationguide/getting-started/introduction-to-our-gateway/security-and-compliance.md) - [Setting up your Integration](https://guides.gitbook.io/integrationguide/getting-started/setting-up-your-integration.md) - [Prerequisites](https://guides.gitbook.io/integrationguide/getting-started/setting-up-your-integration/prerequisites.md) - [Integration Details](https://guides.gitbook.io/integrationguide/getting-started/setting-up-your-integration/integration-details.md) - [Authentication](https://guides.gitbook.io/integrationguide/getting-started/setting-up-your-integration/authentication.md) - [Supported Action](https://guides.gitbook.io/integrationguide/getting-started/setting-up-your-integration/supported-actions.md) - [Features](https://guides.gitbook.io/integrationguide/gateway-functionality/features.md) - [New Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/features/new-transactions.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/new-transactions/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/new-transactions/response-fields.md) - [Management Requests](https://guides.gitbook.io/integrationguide/gateway-functionality/features/management-requests.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/management-requests/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/management-requests/response-fields.md) - [AVS/CV2 Checking](https://guides.gitbook.io/integrationguide/gateway-functionality/features/avs-cv2-checking.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/features/avs-cv2-checking/benefits-and-limitations.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/avs-cv2-checking/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/avs-cv2-checking/response-fields.md) - [3-D Secure Authentication](https://guides.gitbook.io/integrationguide/gateway-functionality/features/3-d-secure-authentication.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/features/3-d-secure-authentication/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/features/3-d-secure-authentication/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/features/3-d-secure-authentication/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/3-d-secure-authentication/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/3-d-secure-authentication/response-fields.md) - [Advanced Features](https://guides.gitbook.io/integrationguide/gateway-functionality/features/3-d-secure-authentication/advanced-features.md) - [Risk Checking](https://guides.gitbook.io/integrationguide/gateway-functionality/features/risk-checking.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/features/risk-checking/benefits-and-limitations.md) - [Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/features/risk-checking/implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/risk-checking/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/risk-checking/response-fields.md) - [Payment Facilitators](https://guides.gitbook.io/integrationguide/gateway-functionality/features/payment-facilitators.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/payment-facilitators/request-fields.md) - [UK MCC 6012 Merchants](https://guides.gitbook.io/integrationguide/gateway-functionality/features/uk-mcc-6012-merchants.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/uk-mcc-6012-merchants/request-fields.md) - [Billing Descriptor](https://guides.gitbook.io/integrationguide/gateway-functionality/features/billing-descriptor.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/billing-descriptor/request-fields.md) - [Surcharges](https://guides.gitbook.io/integrationguide/gateway-functionality/features/surcharges.md) - [Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/features/surcharges/implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/surcharges/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/surcharges/response-fields.md) - [Receipts and Notifications](https://guides.gitbook.io/integrationguide/gateway-functionality/features/receipts-and-notifications.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/receipts-and-notifications/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/receipts-and-notifications/response-fields.md) - [Credentials on File](https://guides.gitbook.io/integrationguide/gateway-functionality/features/credentials-on-file.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/credentials-on-file/request-fields.md) - [Recurring Transaction Agreements](https://guides.gitbook.io/integrationguide/gateway-functionality/features/recurring-transaction-agreements.md) - [Scheduling](https://guides.gitbook.io/integrationguide/gateway-functionality/features/recurring-transaction-agreements/scheduling.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/recurring-transaction-agreements/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/recurring-transaction-agreements/response-fields.md) - [Dynamic Currency Conversion](https://guides.gitbook.io/integrationguide/gateway-functionality/features/dynamic-currency-conversion.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/features/dynamic-currency-conversion/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/features/dynamic-currency-conversion/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/features/dynamic-currency-conversion/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/dynamic-currency-conversion/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/dynamic-currency-conversion/response-fields.md) - [Purchase Data](https://guides.gitbook.io/integrationguide/gateway-functionality/features/purchase-data.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/purchase-data/request-fields.md) - [Custom Data](https://guides.gitbook.io/integrationguide/gateway-functionality/features/custom-data.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/custom-data/request-fields.md) - [Advanced Data](https://guides.gitbook.io/integrationguide/gateway-functionality/features/advanced-data.md) - [Customer Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/advanced-data/customer-request-fields.md) - [Merchant Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/advanced-data/merchant-request-fields.md) - [Supplier Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/advanced-data/supplier-request-fields.md) - [Delivery Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/advanced-data/delivery-request-fields.md) - [Receiver Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/advanced-data/receiver-request-fields.md) - [Shipping Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/advanced-data/shipping-request-fields.md) - [Device Information Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/advanced-data/device-information-fields.md) - [Acquirer Data](https://guides.gitbook.io/integrationguide/gateway-functionality/features/acquirer-data.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/acquirer-data/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/acquirer-data/response-fields.md) - [Gateway Wallet](https://guides.gitbook.io/integrationguide/gateway-functionality/features/gateway-wallet.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/features/gateway-wallet/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/features/gateway-wallet/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/features/gateway-wallet/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/gateway-wallet/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/features/gateway-wallet/response-fields.md) - [Payment Methods](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods.md) - [Digital Wallet Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/digital-wallet-transactions.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/digital-wallet-transactions/benefits-and-limitations.md) - [Configuration](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/digital-wallet-transactions/configuration.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/digital-wallet-transactions/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/digital-wallet-transactions/direct-implementation.md) - [Digital Wallet Tokens](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/digital-wallet-transactions/digital-wallet-tokens.md) - [Masterpass Wallet Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/masterpass-wallet-transactions.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/masterpass-wallet-transactions/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/masterpass-wallet-transactions/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/masterpass-wallet-transactions/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/masterpass-wallet-transactions/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/masterpass-wallet-transactions/response-fields.md) - [PayPal Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/paypal-transactions.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/paypal-transactions/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/paypal-transactions/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/paypal-transactions/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/paypal-transactions/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/paypal-transactions/response-fields.md) - [Transaction Lifecycle](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/paypal-transactions/transaction-lifecycle.md) - [Reference Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/paypal-transactions/reference-transactions.md) - [Amazon Pay Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/amazon-pay-transactions.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/amazon-pay-transactions/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/amazon-pay-transactions/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/amazon-pay-transactions/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/amazon-pay-transactions/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/amazon-pay-transactions/response-fields.md) - [Transaction Lifecycle](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/amazon-pay-transactions/transaction-lifecycle.md) - [Reference Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/amazon-pay-transactions/reference-transactions.md) - [PPRO Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/ppro-transactions.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/ppro-transactions/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/ppro-transactions/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/ppro-transactions/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/ppro-transactions/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/ppro-transactions/response-fields.md) - [Transaction Cycle](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/ppro-transactions/transaction-cycle.md) - [NomuPay Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/nomupay-transactions.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/nomupay-transactions/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/nomupay-transactions/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/nomupay-transactions/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/nomupay-transactions/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/nomupay-transactions/response-fields.md) - [Transaction Lifecyle](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/nomupay-transactions/transaction-lifecyle.md) - [OBMC Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/obmc-transactions.md): Open Banking Mastercard - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/obmc-transactions/benefits-and-limitations.md) - [Hosted implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/obmc-transactions/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/obmc-transactions/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/obmc-transactions/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/obmc-transactions/response-fields.md) - [Transaction Lifecycle](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/obmc-transactions/transaction-lifecycle.md) - [Qi Digital Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/qi-digital-transactions.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/qi-digital-transactions/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/qi-digital-transactions/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/qi-digital-transactions/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/qi-digital-transactions/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/qi-digital-transactions/response-fields.md) - [Transaction Lifecycle](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/qi-digital-transactions/transaction-lifecycle.md) - [SecurePlus Transactions](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/secureplus-transactions.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/secureplus-transactions/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/secureplus-transactions/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/secureplus-transactions/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/secureplus-transactions/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/secureplus-transactions/response-fields.md) - [Click to Pay](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/click-to-pay.md) - [Benefits and Limitations](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/click-to-pay/benefits-and-limitations.md) - [Hosted Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/click-to-pay/hosted-implementation.md) - [Direct Implementation](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/click-to-pay/direct-implementation.md) - [Request Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/click-to-pay/request-fields.md) - [Response Fields](https://guides.gitbook.io/integrationguide/gateway-functionality/payment-methods/click-to-pay/response-fields.md) - [Response and Advice Codes](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes.md) - [Response Codes](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/response-codes.md) - [Authorisation Response Codes](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/response-codes/authorisation-response-codes.md) - [Gateway Response Codes](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/response-codes/gateway-response-codes.md) - [General Error Codes](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/response-codes/gateway-response-codes/general-error-codes.md) - [3-D Secure Error Codes: 65792 - 65823](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/response-codes/gateway-response-codes/3-d-secure-error-codes-65792-65823.md) - [Remoted Checkout Processing Error Codes: 65824 - 65885](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/response-codes/gateway-response-codes/remoted-checkout-processing-error-codes-65824-65885.md) - [Risk Check Processing Error Codes: 65856 - 65887](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/response-codes/gateway-response-codes/risk-check-processing-error-codes-65856-65887.md) - [Missing Request Field Error Codes: 66048 - 66303 and 66560 - 66815](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/response-codes/gateway-response-codes/missing-request-field-error-codes-66048-66303-and-66560-66815.md) - [Invalid Request Field Error Codes: 66304 - 66559 and 66816 - 67071](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/response-codes/gateway-response-codes/invalid-request-field-error-codes-66304-66559-and-66816-67071.md) - [AVS/CV2 Check Response Codes](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/response-codes/avs-cv2-check-response-codes.md) - [Retry Transaction Advice Codes](https://guides.gitbook.io/integrationguide/references/response-and-advice-codes/retry-transaction-advice-codes.md) - [Feature References](https://guides.gitbook.io/integrationguide/references/feature-references.md) - [3-D Secure](https://guides.gitbook.io/integrationguide/references/feature-references/3-d-secure.md) - [3-D Secure Authentication Data](https://guides.gitbook.io/integrationguide/references/feature-references/3-d-secure/3-d-secure-authentication-data.md) - [3-D Secure Enrolment/Authentication Only](https://guides.gitbook.io/integrationguide/references/feature-references/3-d-secure/3-d-secure-enrolment-authentication-only.md) - [Request Checking Only](https://guides.gitbook.io/integrationguide/references/feature-references/request-checking-only.md) - [Merchant Account Routing](https://guides.gitbook.io/integrationguide/references/feature-references/merchant-account-mapping.md) - [Velocity Control System (VCS)](https://guides.gitbook.io/integrationguide/references/feature-references/velocity-control-system-vcs.md) - [Duplicate Transaction Checking](https://guides.gitbook.io/integrationguide/references/feature-references/duplicate-transaction-checking.md) - [Capture Delay](https://guides.gitbook.io/integrationguide/references/feature-references/capture-delay.md) - [Card Identification](https://guides.gitbook.io/integrationguide/references/feature-references/card-identification.md) - [Integration Testing](https://guides.gitbook.io/integrationguide/references/feature-references/integration-testing.md) - [Sample Signature Calculation](https://guides.gitbook.io/integrationguide/references/feature-references/sample-signature-calculation.md) - [Transaction Life Cycle](https://guides.gitbook.io/integrationguide/references/feature-references/transaction-life-cycle.md) - [Transaction Types](https://guides.gitbook.io/integrationguide/references/feature-references/transaction-types.md) - [Payment Tokenisation](https://guides.gitbook.io/integrationguide/references/feature-references/payment-tokenisation.md) - [Transaction Cloning](https://guides.gitbook.io/integrationguide/references/feature-references/transaction-cloning.md) - [Credentials on File Matrix](https://guides.gitbook.io/integrationguide/references/feature-references/credentials-on-file-matrix.md) - [PSD2 SCA Compliance](https://guides.gitbook.io/integrationguide/references/feature-references/psd2-sca-compliance.md) - [Obtaining Strong Customer Authentication](https://guides.gitbook.io/integrationguide/references/feature-references/psd2-sca-compliance/obtaining-strong-customer-authentication.md) - [SCA Soft-Declines](https://guides.gitbook.io/integrationguide/references/feature-references/psd2-sca-compliance/sca-soft-declines.md) - [Exemptions to Strong Customer Authentication](https://guides.gitbook.io/integrationguide/references/feature-references/psd2-sca-compliance/exemptions-to-strong-customer-authentication.md) - [SCA Using 3-D Secure](https://guides.gitbook.io/integrationguide/references/feature-references/psd2-sca-compliance/sca-using-3-d-secure.md) - [Hosted Payment Page Options](https://guides.gitbook.io/integrationguide/references/feature-references/hosted-payment-page-options.md) - [Pay Buttons](https://guides.gitbook.io/integrationguide/references/feature-references/pay-buttons.md) - [Code References](https://guides.gitbook.io/integrationguide/references/code-references.md) - [Integration Libraries](https://guides.gitbook.io/integrationguide/references/code-references/integration-libraries.md) - [Gateway Integration Library](https://guides.gitbook.io/integrationguide/references/code-references/integration-libraries/gateway-integration-library.md) - [Hosted Payment Page Library](https://guides.gitbook.io/integrationguide/references/code-references/integration-libraries/hosted-payment-page-library.md) - [Hosted Payment Fields Library](https://guides.gitbook.io/integrationguide/references/code-references/integration-libraries/hosted-payment-fields-library.md) - [Example HTTP Requests](https://guides.gitbook.io/integrationguide/references/code-references/example-http-requests.md) - [Example Integration Code](https://guides.gitbook.io/integrationguide/references/code-references/example-integration-code.md) - [Example Library Code](https://guides.gitbook.io/integrationguide/references/code-references/example-library-code.md) - [Frequently Asked Questions](https://guides.gitbook.io/integrationguide/references/frequently-asked-questions.md)