Understanding the Role of a Cardholder in Transactions

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CARD PAYMENT & ISO8583
SYLLABUS
Module 1: Introduction to Card Payments
 4 party model
1. Cardholder
2. Acquirer
3. Issuer
4. Card scheme
 Onus transactions
 Offus transactions
 EFT switch
 Transaction routing
 Different types of limits
 Routing logic
 Priority routing
 NDC protocol
 Diebold protocol
 Acquiring transaction flows
 Issuing transaction flows
 Authorization
 Presentment
 Authorization vs presentment
 Matching
 Settlement
 Reconciliation
 Master card outgoing and incoming files
 Visa outgoing and incoming files
 Keys management
 Different types of keys
1. TPK
2. TMK
3. ZPK
4. ZMK
5. PVK
 Payment gateway
 Payment facilitator
Module 2: Introduction to ISO 8583
 History and Purpose of ISO 8583
 Origins of the standard
 Overview of its application in payment systems
 ISO 8583 in Modern Payment Systems
 Role in card-based transactions
 Application in ATMs, point of sale (POS) systems, and online transactions
Module 3: ISO 8583 Message Structure
 Message Type Indicator (MTI)
 Breakdown of MTI structure (class, function, and origin)
 Example MTIs and their usage
 Bitmaps
 Primary and secondary bitmaps
 Structure and role in determining present fields
 Data Fields
 Overview of the standard fields (1–128)
 Field categories (mandatory, optional, conditional)
 Detailed breakdown of key fields (e.g., card number, amount, date/time)
Module 4: Data Elements in ISO 8583
 Common Data Elements (Fields)
 Field 2: Primary Account Number (PAN)
 Field 4: Transaction Amount
 Field 7: Transmission Date and Time
 Field 11: System Trace Audit Number (STAN)
 Field 37: Retrieval Reference Number
 Field 39: Response Code
 Extended Data Elements
 Field 55: EMV Data
 Field 62: Transaction-specific data
 Coding Formats
 ASCII, BCD, and Binary Encoding
Module 5: Transaction Types in ISO 8583
 Authorization Requests
 MTI: 0100 and 0110
 Fields used for authorizations
 Financial Transactions
 MTI: 0200 and 0210
 Key fields for purchases, cash withdrawals, etc.
 Reversals and Cancellations
 MTI: 0400 and 0410
 Reversal process and use of specific fields
 Administrative and Network Management Messages
 MTI: 0800 and 0810
Module 6: Practical Examples
 Message Flow
 Example message exchange between a POS terminal and a payment processor
 Example ATM withdrawal transaction
 Message Parsing

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