Mastercard Authorization Systems and Business Rules

Lesson 1 • Card Product Types and Identifiers

Distinguishes credit, debit, prepaid, and commercial card products. Links product type to authorization behavior differences covered later.

Lesson 2 • Mastercard Network Positioning

Describes Mastercard's role as a licensed network operating rules and infrastructure. Contextualizes how Mastercard rules govern issuer and acquirer behavior.

Lesson 3 • Four-Party Network Architecture

Defines issuers, acquirers, merchants, and cardholders within a card network. Provides the participant map needed for all subsequent authorization concepts.

Lesson 1 • ISO 8583 Message Format Basics

Introduces the international standard for financial transaction messages. Establishes the structural vocabulary required to interpret Mastercard authorization messages.

Lesson 2 • Reversal and Advice Messages

Covers 0120 advice and 0400 reversal message types and their use cases. Ensures students understand how to correct or cancel an authorization properly.

Lesson 3 • Authorization Response Interpretation

Explains the 0110 response message structure and response code meanings. Enables practitioners to diagnose declines and route retry logic correctly.

Lesson 4 • Authorization Request Construction

Covers how acquirers and terminals build a compliant 0100 authorization request. Connects field population errors to downstream decline and dispute risks.

Lesson 1 • Stand-In Processing (STIP)

Explains how Mastercard's Stand-In Processing approves or declines when the issuer is unreachable. Covers STIP parameters issuers configure to control stand-in behavior.

Lesson 2 • Dual Message vs. Single Message Systems

Contrasts dual-message authorization-then-clearing with single-message full-data transactions. Clarifies which Mastercard products use each system and why.

Lesson 3 • BIN Routing and Card Range Tables

Describes how the Bank Identification Number directs messages to the correct issuer. Explains card range table maintenance and its effect on routing accuracy.

Lesson 4 • Timeout and Retry Handling

Covers network timeout scenarios, retry rules, and duplicate detection logic. Prevents practitioners from creating duplicate authorizations or violating retry restrictions.

Lesson 1 • Cardholder Verification Methods (CVM)

Defines the CVM hierarchy used at chip and magnetic-stripe terminals. Explains how terminal and card CVM lists interact to select the applied method.

Lesson 2 • Strong Customer Authentication Requirements

Describes multi-factor authentication requirements applicable to card-not-present transactions. Explains exemptions and how issuers apply them within Mastercard rules.

Lesson 3 • EMV Chip Authentication

Explains offline and online chip authentication processes in EMV transactions. Connects chip data elements to issuer authorization decision inputs.

Lesson 4 • 3-D Secure for E-Commerce

Covers the 3-D Secure protocol versions supported by Mastercard for card-not-present authentication. Links authentication results to liability shift rules.

Lesson 1 • Fraud Scoring and Risk Controls

Covers real-time fraud scoring models and risk-based decline logic used by issuers. Links fraud control design to false-positive rate management.

Lesson 2 • Credit and Velocity Controls

Explains credit limit, available balance, and velocity limit checks in authorization. Connects these controls to cardholder agreement terms and Mastercard rules.

Lesson 3 • Issuer Authorization Workflow

Maps the internal steps an issuer host executes upon receiving a 0100 message. Establishes the decision sequence that subsequent sections refine.

Lesson 4 • Partial Approval Processing

Explains when and how issuers must support partial approval for prepaid and debit. Covers acquirer and merchant obligations to complete or reverse partial approvals.

Lesson 1 • Incremental and Estimated Authorizations

Covers rules for incremental authorization in hospitality and vehicle rental. Explains estimated authorization practices and tolerance limits for final amounts.

Lesson 2 • Acquirer Authorization Obligations

States the rules acquirers must enforce on merchants regarding authorization practices. Covers prohibited practices such as split transactions and forced transactions.

Lesson 3 • Recurring and Installment Transactions

Defines Mastercard rules for recurring billing and installment payment authorization. Covers credential-on-file indicators and cardholder consent requirements.

Lesson 4 • Issuer Response Obligations

Defines Mastercard rules governing how and when issuers must respond to authorization requests. Covers response time standards and prohibited decline practices.

Lesson 1 • Card-Not-Present Authorization

Covers authorization rules specific to e-commerce, mail order, and telephone order transactions. Explains required data elements and fraud mitigation obligations for CNP.

Lesson 2 • ATM and Cash Access Transactions

Details authorization rules for ATM cash withdrawals and cash-back at point of sale. Covers PIN requirements and network routing for cash transactions.

Lesson 3 • Cross-Border and Currency Conversion

Covers authorization rules for international transactions and dynamic currency conversion. Explains cardholder disclosure requirements and issuer currency handling.

Lesson 4 • Contactless and Transit Transactions

Explains authorization rules for contactless tap-and-go and transit fare collection. Covers offline spending limits and transit aggregation authorization models.

Lesson 1 • Authorization Strategy Design

Synthesizes all prior chapter content into a structured authorization strategy framework. Guides practitioners through strategy documentation, testing, and governance.

Lesson 2 • Decline Analysis and Remediation

Provides a structured method for diagnosing high decline rates by response code and segment. Connects root-cause findings to specific rule or system remediation actions.

Lesson 3 • Fraud Loss and Authorization Trade-offs

Quantifies the cost trade-off between tighter fraud controls and lost approval revenue. Enables practitioners to set risk appetite thresholds aligned with business objectives.

Lesson 4 • Mastercard Reporting and Compliance Tools

Introduces Mastercard-provided reporting platforms for authorization monitoring and compliance. Covers how to interpret reports and respond to compliance alerts.