API Overview

Recent Revisions to This Document

Payer Authentication Developer Guide

Introduction to Payer Authentication
- Why Payer Authentication Is Needed
- EMV 3-D Secure 2.0
- Payer Authentication Customer Workflow
- Payer Authentication Merchant Workflow
- Enable Merchant Account for EMV 3-D Secure
- Payer Authentication Configuration Testing
- Request Endpoints
- Payer Authentication Integrations

Implementing Direct API for Payer Authentication
- Prerequisites
- After Implementation and Before Go Live

Step 1: Setup Service
- Request Fields
- Important Response Fields

Step 2: Device Data Collection
- Which Device Data is Collected
- Building the Iframe
- Initiating the Device Data Collection Iframe
- Submitting the Device Data Collection Iframe
- Receiving the Device Data Collection URL Response

Step 3: Payer Authentication Check Enrollment Service
- Request Fields
- Interpreting the Check Enrollment Response
- Important Response Fields

Step 4: Step-Up Iframe
- Building the Iframe Parameters
- Creating the Iframe
- Invoking the Iframe
- Receiving the Step-Up Results

Step 5: Payer Authentication Validation Service
- Request Fields
- Interpreting the Validation Response
- Redirecting Customers to Pass or Fail Message Page

Combining the Authentication and the Authorization Services
- Combining Check Enrollment and the Authorization Services
  - Check Enrollment Response Fields and Their Equivalent Authorization Request Fields
- Combining the Validation and the Authorization Services
  - Validation Fields and their Equivalent Authorization Fields

Implementing SDK Payer Authentication
- Implementation Overview
- Process Flow for SDK Integration
- Prerequisites for SDK Implementation
  - Credentials/API Keys
    - Generating your API Key:
- Mobile Device Data Collected
- Using the Android SDK
  - Updating the Gradle Build Properties
  - Configuring the Android SDK
  - Setting Up the Initial Request
- Using the iOS SDK
  - Downloading and Importing the SDK
  - Configuring Your Build Environment
  - Configuring the iOS SDK
  - Setting Up the Initial Request
- Running Payer Authentication with SDK
  - Requesting the Check Enrollment Service (SDK)
  - Interpreting the Response
  - Authenticating Enrolled Cards
    - Calling Cardinal.cca_continue (Android SDK)
    - Calling Cardinal session continue (iOS SDK)
    - Receiving the Authentication Results
  - Requesting the Validation Service
    - Interpreting the Response
    - Redirecting Customers to the Message Page

Authentication Examples Using Primary Account Numbers
- Setting Up Device Data Collection
  - Required Fields for Device Data Collection
  - Optional Fields for Device Data Collection
  - REST Example: Setting Up Data Collection
- Checking Enrollment in Payer Authentication
  - Required Fields for Checking Enrollment in Payer Authentication
  - Optional Fields for Checking Enrollment in Payer Authentication
  - REST Example: Checking Enrollment
- Checking Enrollment and Authorizing a Transaction
  - Required Fields for Checking Enrollment in Payer Authentication
  - REST Example: Checking Enrollment and Authorizing a Transaction
- Validating a Challenge
  - Required Fields for Validating a Challenge
  - Optional Fields for Validating a Challenge
  - REST Example: Validating a Challenge
- Validating and Authorizing a Transaction
  - Required Fields for Processing an Authorization Using Visa Secure
  - Optional Fields for Validating a Challenge
  - REST Example: Validating and Authorizing a Transaction
- Non-Payment Authentication
  - Required Fields for Checking Enrollment in Payer Authentication
  - REST Example: Checking Enrollment for Non-Payment Authentication

Examples Using 3-D Secure Data Only
- Visa Data Only
  - Required Fields for Visa Data Only
  - REST Example: Visa Data Only
  - REST Example: Bundled Authentication and Authorization with Visa Data Only
- Mastercard Data Only
  - Required Fields for Mastercard Data Only
  - REST Example: Mastercard Data Only
  - REST Example: Bundled Authentication and Authorization with Mastercard Data Only

Authentication Examples Using Digital Payment (Google Pay)
- Setting Up Device Data Collection Using Digital Payment (Google Pay)
  - pa2-use-setup-reqd-fields-google
  - pa2-use-setup-opt-fields-google
  - REST Example: Setting Up Device Data Collection When Using Digital Payment (Google Pay)
- Checking Enrollment in Payer Authentication Using Digital Payment (Google Pay)
  - pa2-use-check-enroll-reqd-fields-google
  - pa2-use-check-enroll-opt-fields-google
  - REST Example: Checking Enrollment in Payer Authentication Using Google Pay
- Validating a Challenge Using Digital Payment (Google Pay)
  - pa2-use-validate-reqd-fields-google
  - pa2-use-validation-opt-fields-google
  - REST Example: Validating a Challenge When Using Google Pay

Authentication Examples Using TMS Tokens
- Setting Up Device Data Collection with a TMS Token
  - Required Fields for Setting Up Data Collection When Using a TMS Token
  - REST Example: Setting Up Device Data Collection When Using a TMS Token
- Checking Enrollment When Using a TMS Token
  - Required Fields for Checking Enrollment in Payer Authentication While Using a TMS Token
  - REST Example: Checking Enrollment When Using a TMS Token
- Validating a Challenge When Using a TMS Token
  - Required Fields for Validating a Challenge When Using a TMS Token
  - REST Example: Validating a Challenge When Using a TMS Token

Authentication Examples Using Flex Microform Tokens
- Setting Up Device Data Collection When Using a Flex Microform Token
  - Required Fields for Setting Up Device Data Collection When Using a Flex Microform Token
  - REST Example: Setting Up Device Data Collection When Using a Flex Microform Token
- Checking Enrollment When Using a Flex Microform Token
  - Required Fields for Checking Enrollment When Using a Flex Microform Token
  - REST Example: Checking Enrollment When Using a Flex Microform Token (Challenge)
- Validating a Challenge When Using a Flex Microform Token
  - Required Fields for Validating a Challenge When Using a Flex Microform Token
  - REST Example: Validating a Challenge When Using a Flex Microform Token

Authentication Examples Using Network Token/Tokenized Cards
- Setting Up Device Data Collection with a Network Token/Tokenized Card
  - Required Fields for Setting Up Device Data Collection with a Network Token/Tokenized Card
  - REST Example: Setting Up Device Data Collection When Using a Network Token/Tokenized Card
- Checking Enrollment with a Network Token/Tokenized Card
  - Required Fields for Checking Enrollment When Using a Network Token/Tokenized Card
  - REST Example: Checking Enrollment When Using a Network Token/Tokenized Card (Frictionless)

Authentication Examples of Merchant-Initiated Transactions
- Challenge Reponses to 3RI Transactions
- Network-Specific Values for Multi-Party Commerce/Online Travel Agency (OTA)
- 1a: Initial Recurring Transaction
  - Required Fields for 3RI 1a: Initial Recurring Transaction
  - REST Example: Checking Enrollment for a 3RI Initial Recurring Transaction
  - REST Example: Validating the Challenge for a 3RI Initial Recurring Transaction
- 1b: Recurring Payments - Subsequent Transaction (Mastercard)
  - Required Fields for 3RI 1b: Recurring Payments - Subsequent Transaction (Mastercard)
  - REST Example: Validating the Challenge for 3RI Subsequent Installment Transactions
- 2a: Installment - Customer Initiated Transaction (Mastercard)
  - Required Fields for 3RI 2a: Installment - Customer Initiated Transaction (Mastercard)
  - REST Example: Checking Enrollment for a 3RI Customer Initiated Total Installments (Mastercard)
  - REST Example: Validating the Challenge for a 3RI Customer Initiated Total Installments (Mastercard)
- 3a: Split/Partial Shipment (Mastercard)
  - Required Fields for 3RI 3a: Split/Partial Shipment (Mastercard)
  - REST Example: Checking Enrollment for 3RI Split Shipment Transaction (Mastercard)
- 3b: Split/Delayed Shipment (Visa)
  - Required Fields for 3RI 3b: Split/Delayed Shipment (Visa)
  - REST Example: Checking Enrollment for 3RI Split Shipment Transaction (Visa)
- 4a: Multi-Party Commerce or OTA (Visa)
  - Required Fields for 3RI 4a: Multi-Party Commerce or OTA (Visa)
  - REST Example: Checking Enrollment for 3RI Multi-Party Commerce Transaction (Visa)
- 4b: Multi-Party Commerce or OTA (MasterCard)
  - Required Fields for 3RI 4b: Multi-Party Commerce or OTA (MasterCard)
  - REST Example: Checking Enrollment for 3RI Multi-Party Commerce Transaction (Mastercard)
  - REST Example: Validating the Challenge for 3RI Multi-Party Commerce Transaction (Mastercard)
- 4c: Multi-Party Commerce or OTA (MasterCard)
  - Required Fields for 3RI 4c: Multi-Party Commerce or OTA (MasterCard)
  - REST Example: Checking Enrollment for 3RI Multi-Party Commerce Transaction (Mastercard)

Testing Payer Authentication
- Testing Process
  - Enrollment Check Response Fields
  - Authentication Validation Response Fields
- Test Cases for 3-D Secure 2.x
  - 2.1: Frictionless Authentication Is Successful
  - 2.2: Frictionless Authentication Is Unsuccessful
  - 2.3: Stand-In Frictionless Authentication is Attempted
  - 2.4: Frictionless Authentication Is Unavailable
  - 2.5: Frictionless Authentication Is Rejected
  - 2.6: Authentication Is Not Available
  - 2.7: Check Enrollment Error
  - 2.8: Time Out
  - 2.9: Step-Up Authentication Is Successful
  - 2.10: Step-Up Authentication Is Unsuccessful
  - 2.11: Step-Up Authentication Is Unavailable
  - 2.12: Error During Authentication
  - 2.13: Authentication Is Bypassed
  - 2.14: Require Method URL
- Additional Test Cases
  - 1a: First Recurring Transaction: Fixed Amount
  - 2a: Card Authentication Failed
  - 2b: Suspected Fraud
  - 2c: Cardholder Not Enrolled in Service
  - 2d: Transaction Timed Out at the ACS
  - 2e: Non-Payment Transaction Not Supported
  - 2f: 3RI Transaction Not Supported
  - 3a: TRA Exemption—Low Value: Mastercard EMV 3-D Secure 2.1 and 2.2
  - 3b: TRA—Low Value: Visa
  - 3c: TRA—Low Value: Discover
  - 4a: Trusted Beneficiary Prompt for Trustlist
  - 4b: Utilize Trusted Beneficiary Exemption
  - 5a: Visa Data Only
  - 5b: Identity Check Insights (ScoreRequest = Y)
- HTTP Status Codes

Website Modification Reference
- Website Modification Checklist
- EMV 3-D Secure Service Logos
- Informational Message Examples

Upgrading Your Payer Authentication Implementation
- Benefits
- PSD2 Impact
  - Mandates
- Recommended Integration

Finding Payer Authentication Transaction Details in the Smartpay Fuse Portal
- Searching for Transactions
- Storing Payer Authentication Data
- Searching for Payer Authentication Details
  - Enrolling a Card
    - Checking Enrollment
    - Authentication Validation
  - Card Not Enrolled
    - Transaction Details

Payer Authentication Reports
- Payer Authentication Summary Report
  - Download the Report
  - Matching the Report to the Transaction Search Results
  - Interpreting the Report
  - Comparing Payer Authentication and Payment Reports
- Payer Authentication Detail Report
  - Report Element
  - PayerAuthDetail Element
  - PAReq Element
  - PARes Element
  - AuthInfo Element
  - Report Examples

Glossary

2.12: Error During Authentication

This test checks how your system reacts when authentication request errors occurs during processing.

Card Numbers

Card Type	Test Card Number
	`3-D Secure` 2.1.0	`3-D Secure` 2.2.0
American Express Card Type = 003	—	34XXXX XX XXXX 2351
Diners Club Card Type = 005	—	6X11XX XX XXXX 257X
Discover Card Type = 004	—	6X11XX XX XXXX 257X
Mastercard Card Type = 002	—	52XXXX XX XXXX 2656
Visa Card Type = 001	—	4XXXXX XX XXXX 2644

Results for the Check Enrollment Service

=

PENDING_AUTHENTICATION

The cardholder is enrolled in payer authentication. Please authenticate before proceeding with authorization.

VERes enrolled =

Y

PARes status =

C

PAReq =

<PAReq value>

Results for the Validation Authentication Service

=

AUTHENTICATION_FAILED

User failed authentication.

Payer cannot be authenticated.

PARes status =

U

XID =

<XID value>

(American Express only)

E-Commerce Indicator (ECI) Values

This table lists the expected ECI raw values and their respective string values from this transaction. These values indicate whether the payer was validated by the card network. These values should be passed under this test condition when a transaction is submitted for payment authorization.

Network	ECI Raw Value	ECI String Value
American Express	07	internet
Diners Club	07	internet
Discover	07	internet
Mastercard	00	internet
Visa	07	internet or vbv_failure

Action

You can retain liability and submit this transaction for authorization as an unauthenticated transaction, or you can ask the customer for another form of payment.