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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

`Flex API`

The Flex API enables merchants to accept customer payment information captured within a server-side application safely and securely using a set of APIs. These APIs protect your customer's primary account number (PAN), card verification number (CVN), and other payment information by embedding this information within a transient token. This allows payment data to be stored and transported while complying with the Payment Card Industry Data Security Standard (PCI DSS) policies and procedures. These transient tokens can be validated by the receiver to ensure the data integrity and protect against data injection attacks.

WARNING

Flex API is intended for server-side applications only. Do not use the Flex API in client-side applications. To add secure payments directly into client-side code, use Unified Checkout.

How It Works

To capture payments using the Flex API:

Establish a payment session with a predefined customer context

Validate the JSON web token

Populate the JSON web token with customer information

Customer Context

One of the important benefits of Flex API is managing Personal Identifiable Information (PII). You can set up your customer context to include all PII associated with transactions, protecting this information from third-parties.