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About This Guide

Introducing Digital Accept Secure Integration Product Suite

Flex API
- Establishing a Payment Session with a Capture Context
  - REST Example: Establishing a Payment Session with a Capture Context
- Validating the JSON Web Token
  - Retrieving the Public Key ID
  - Retrieving the Public Key
  - JAVA Example: Validating the Transient Token
- Populating the JSON Web Token with Customer Information
  - Constructing the JSON Payload
  - Generating a JSON Web Encryption Data Object
  - Populating the Token Request

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
  - Adding the Payment Application and Payment Acceptance
    - JavaScript Example: Setting Up with Full Sidebar
    - JavaScript Example: Setting Up with the Embedded Component
- Transient Tokens
  - Transient Token Format
  - Token Verification
- Authorizations with a Transient Token
  - Required Field for an Authorization with a Transient Token
  - REST Example: Authorization with a Transient Token
- Capture Context API
  - Required Fields for Requesting the Capture Context
  - REST Example: Requesting the Capture Context
- Payment Details API
  - Required Field for Retrieving Transient Token Payment Details
  - REST Example: Retrieving Transient Token Payment Details
- Unified Checkout Configuration
  - Enable Digital Payments
    - Enabling Click to Pay
    - Enrolling in Google Pay
  - Manage Permissions
    - Managing Permissions as a Direct Merchant
    - Managing Permissions as a Portfolio Administrator
- Unified Checkout 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 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

Click to Pay Drop-In UI
- Click to Pay Customer Workflows
  - Recognized Click to Pay Customer
  - Unrecognized Click to Pay Customer
  - Guest Customer
- Click to Pay Drop-In UI 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
  - Adding the Payment Application and Payment Acceptance
    - JavaScript Example: Setting Up with Full Sidebar
    - JavaScript Example: Setting Up with the Embedded Component
- Transient Tokens
  - Transient Token Format
  - Token Verification
- Capture Context API
  - Required Fields for Requesting the Capture Context
  - REST Example: Requesting the Capture Context
- Payment Details API
  - Required Field for Retrieving Transient Token Payment Details
  - REST Example: Retrieving Transient Token Payment Details
- Payment Credentials API
  - Required Field for Retrieving Payment Credentials
  - REST Example: Retrieving Payment Credentials
- Unified Checkout Configuration
  - Upload Your Encryption Key
    - Generate a Public Private Key Pair
    - Uploading Your Key Pair
  - Enable Click to Pay
    - Enabling Click to Pay
  - Manage Permissions
    - Managing Permissions as a Direct Merchant
    - Managing Permissions as a Portfolio Administrator
- Unified Checkout UI
- JSON Web Tokens
- Supported Countries for Click to Pay
- Supported Locales

Processing Authorizations with a Transient Token
- Authorization with a Transient Token
  - Required Field 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

`Click to Pay Drop-In UI` Flow

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

You 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 Set Up.

You 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 Set Up.

You use the response from the Click to Pay Drop-In UI to retrieve payment credentials for payment processing or other steps.

The figure below illustrates the system's payment flow.

Diagram that shows the sequence and flow of a Click to Pay payment. — Click to Pay Payment Flow

For more information on the specific APIs referenced, see these topics:

Capture Context API

Payment Details API

Payment Credentials API