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About This Guide

Digital Accept Overview
- Unified Checkout Integration
- REST APIs

Flex API
- Establish a Payment Session with a Capture Context
  - REST Example: Establishing a Payment Session with a Capture Context
- Validate the JSON Web Token
  - Retrieve the Public Key ID
  - Retrieve the Public Key
  - JAVA Example: Validating the Transient Token
- Populate the JSON Web Token with Customer Information
  - Constructing the JSON Payload
  - Generate a JWE (JSON Web Encryption) Data Object
  - Populate the Token Request

Unified Checkout
- Unified Checkout Flow
  - Enabling Unified Checkout in the Business Center
- Transient Tokens
  - Transient Token Format
  - Token Verification
- Capture Context API
  - Required Fields for Requesting the Capture Context
  - Optional Fields for Requesting the Capture Context
  - REST Example: Requesting the Capture Context
- Payment Details API
  - REST Example: Retrieving Transient Token Payment Details Response
- Unified Checkout Configuration
  - Upload Your Encryption Key
    - Generate a Public Private Key Pair
    - Uploading Your Key Pair
  - Enable Digital Payments
    - Enrolling in Apple Pay
    - Enrolling in Click to Pay
    - Enrolling in Google Pay
  - Manage Permissions
    - Managing Permissions as a Direct Merchant
    - Managing Permissions as a Portfolio Administrator
- 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
- Supported Countries for Digital Payments
- Supported Locales

Processing Authorizations with a Transient Token
- Authorization with a Transient Token
  - Required Fields for an Authorization with a Transient Token
  - REST Interactive Example: Authorization with a Transient Token
  - REST Example: Authorization with a Transient Token
- Authorization and Creating TMS Tokens with a Transient Token
  - Required Fields for an Authorization and Creating TMS Tokens with a Transient Token
  - REST Interactive Example: Authorization and Creating TMS Tokens with a Transient Token
  - REST Example: Authorization and Creating TMS Tokens with a Transient Token

VISA Platform Connect: Specifications and Conditions for Resellers/Partners

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REST API

`Unified Checkout` Flow

To integrate Unified Checkout into your platform, you need to follow several integration steps. This section gives a high-level overview of how to launch Unified Checkout on your web page and process a transaction using the data that Unified Checkout collects for you. This section provides you with an overview of the integration. You can find the detailed specifications of the APIs later in this document.

The integration flow consists of three events:

Send a server‑to‑server API request for a capture context. This request is fully authenticated and returns a JSON Web Token (JWT) that is necessary to invoke the frontend JavaScript library. For information on setting up the server side, see Server-Side Setup.

Invoke the Unified Checkout JavaScript library using the JWT response from the capture context request. For information on setting up the client side, see Client-Side Setup.

Process the payment.

If you want to retrieve the billing and shipping information captured by Unified Checkout you can use the payment details API.

The figure below illustrates the Unified Checkout payment flow.

Diagram that shows the sequence and flow of a Unified Checkout payment. — Unified Checkout Payment Flow