API Overview

Unified Checkout Developer Guide
- Recent Revisions to This Document

Introduction to Unified Checkout

Unified Checkout Flow
- Enabling Unified Checkout in the Business Center

Server-Side Set Up
- Capture Context

Client-Side Set Up
- Loading the JavaScript Library and Invoking the Accept Function
  - JavaScript Example: Initializing the SDK
  - JavaScript Example: Displaying the Button List
  - JavaScript Example: Processing a Payment
- Complete Integration Examples
  - JavaScript Example: Setting Up with Full Sidebar
  - JavaScript Example: Setting Up with the Embedded Component

Transient Tokens
- Transient Token Format
  - Example: Transient Token Format
- Token Verification
- Support for Dual-Branded Cards

Authorizations with a Transient Token
- REST Example: Requesting an Authorization with a Transient Token

Capture Context API
- Features
- Requesting the Capture Context
  - Required Fields for Requesting the Capture Context
  - REST Example: Requesting the Capture Context
- Validating the Capture Context

Payment Details API
- REST Example: Retrieving Transient Token Payment Details

JavaScript API Reference
- Class: Accept
- Class: AcceptError
- Class: UnifiedPayments

Unified Checkout Configuration
- Enable Digital Payments
  - Enrolling in Apple Pay
  - Preparing a Device for Testing Apple Pay on Unified Checkout
  - Enabling Click to Pay
  - Enrolling in Google Pay
  - Managing Google Pay Authentication Types
  - Enrolling in Echeck/ACH Services
- Manage Permissions
  - Managing Permissions as a Direct Merchant
  - Managing Permissions as a Portfolio Administrator

Test Your Unified Checkout Configuration
- Test Payment Details
- Customer Authentication
  - Set Up Customer Authentication for Visa
  - Authentication Methods

Unified Checkout Appendix
- Unified Checkout UI
  - Apple Pay UI
  - Click to Pay UI
  - Google Pay UI
  - Manual Payment Entry UI
  - Pay with Bank Account UI
  - Paze UI
- JSON Web Tokens
- Client Version History
- Webhooks Support
- Unified Checkout Integration Examples
  - Unified Checkout with Authorization
    - Example: Unified Checkout with Authorization
  - Unified Checkout with Sale
    - Example: Unified Checkout with Sale
  - Unified Checkout with Sale and Decision Manager
    - Example: Unified Checkout with Sale and Decision Manager
  - Unified Checkout without Service Orchestration
    - Example: Unified Checkout without Service Orchestration
  - Echeck Payment with a Transient Token
    - Example: Echeck Payment with a Transient Token
- Supported Countries for Digital Payments
  - Supported Countries for Digital Payments A-D
  - Supported Countries for Digital Payments E-K
  - Supported Countries for Digital Payments L-R
  - Supported Countries for Digital Payments S-Z
- Supported Locales
- Reason Codes

VISA Platform Connect: Specifications and Conditions for Resellers/Partners

Google Pay UI

These screen captures show the sequence of events your customer can expect when completing a payment with Google Pay.

Google Pay UI