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Recent Revisions to This Document

25.02

Added optional setup parameters to control the types of credentials that Google Pay on Unified Checkout Integration receives from Google. See Managing Google Pay Authentication Types.

Added test card numbers. See Test Card Numbers.

25.01

Updated the Important note about China UnionPay cards that do not have CVNs. See Capture Context.

Added additional steps for enrolling in Apple Pay. See Preparing a Device for Testing Apple Pay on Unified Checkout Integration.

24.10

Capture Context: Updated the capture context request sections to include the most recent client version and allowed payment types. See Capture Context and Capture Context API.
Dual-Branded and Co-Badged Cards: Added information about dual-branded cards. See Support for Dual-Branded Cards.

24.09

Added information about China UnionPay cards that do not have a card verification number (CVN) and expiration date. See the Important note in Capture Context.

24.08

Added a note about transient token expiration. See Authorizations with a Transient Token.

Added the Unified Checkout Integration JavaScript Reference. See JavaScript API Reference.

24.07

This revision contains only editorial changes and no technical updates.

24.06

Added support for Apple Pay. See Enrolling in Apple Pay and Apple Pay UI.

24.05

This revision contains only editorial changes and no technical updates.

24.04

This revision contains only editorial changes and no technical updates.

24.03

Added an important note about structuring your integration. See Capture Context API and Payment Details API.

24.02

This guide has undergone a major reorganization.

Added the list of supported countries. See Supported Countries for Digital Payments.