noteWe have upgraded our 3D Secure integration in preparation for 3DS 2 and PSD2 Strong Consumer Authentication (SCA) compliance requirements in 2019. This guide shows our integration for 3DS 2. If you've already integrated 3DS 1, see the 3DS 2 migration guide. If you need to reference older versions of our 3DS integration guide, see the Legacy 3D Secure guide. availability3D Secure 2 will not be available with older versions of our client SDKs. To complete this integration, you'll first need to upgrade to our latest SDKs. Using 3D Secure with a CVV-only nonce If you want to use a CVV-only nonce when creating a transaction with 3D Secure, you will need to pass a 3D Secure Authentication ID together with a CVV-only nonce when creating a transaction.