| Acronyms | Description |
|---|
| 3-D Secure™ | Three-Domain Secure™ (merchant, acquirer, issuer) |
| AAC | Application Authentication Cryptogram |
| AAR | Application Authentication Referral |
| AC | Application Cryptogram |
| ACI | Authorization Characteristics Indicator |
| ACP | Access Control Parameter |
| ACS | Access Control Server |
| ACV | Access Control Value |
| ADA | Application Default Action |
| ADF | Application Definition File |
| ADM | Automated Dispensing Machine |
| ADVT | Acquirer Device Validation Toolkit |
| AEF | Application Elementary File |
| AFD | Automated Fuel Dispenser |
| AFL | Application File Locator |
| AID | Application Identifier |
| AIIC | Acquirer Institution Identification Code |
| AIP | Application Interchange Profile |
| AIR | Authorization Identification Response |
| AMD | Application Management Data |
| APDU | Application Protocol Data Unit |
| ARC | Authorization Responce Code |
| ARPC | Authorization Response Cryptogram |
| ARQC | Authorization Request Cryptogram |
| ATC | Application Transaction Counter |
| ATM | Automated Teller Machine |
| ATR | Assured Transaction Response / Answer To Reset for Smartcards |
| ATS | Account Tracking Service |
| AUC | Application Usage Control |
| Auto-CDB | Automated Cardholder Database Service |
| AVS | Address Verification Service |
| AWK | Acquirer Working Key |
| B2B | Business-to-Business |
| BER | Basic Encoding Rules |
| BCR | BIN Control Record |
| BCD | Binary-Coded Decimal Notation |
| CA | Certificate Authority |
| CABC | Card Acceptor Business Code |
| CAM | Card Authentication Method |
| CAMS | Compromised Account Management System |
| CAT | Cardholder-Activated Terminal |
| CATI | Card Acceptor Terminal ID |
| CAIC | Card Acceptor Identification Code |
| CAP | Chip Authentication Program |
| CAVV | Cardholder Authentication Verification Value |
| CBC | Cipher Block Chaining |
| CCDR | Commercial Card Data Repository |
| CDA | Combined Date Authentication |
| CDOL | Card Risk Management Data Object List |
| CDOL1 | Card Risk Management Data Object List 1 |
| CDOL2 | Card Risk Management Data Object List 2 |
| CER | Compromised Event Reference |
| CIAC | Card Issuer Action Code(s) |
| CID | Cryptogram Information Data |
| CLA | Class Byte of the Command Message |
| CORE | Customer Online Repository |
| CPLC | Card Production Life Cycle Data |
| CPS | Custom Payment Service |
| CRIS | Cardholder Risk Identification Service |
| CRB | Card Recovery Bulletin |
| CRM | Copy Request Manager |
| CRP | Command Response Pair |
| CRS | Chargeback Reduction Service |
| CSN | Card Sequence Number |
| CSU | Card Status Update |
| CVM | Card Verification Method |
| CVN | Cryptogram Version Number |
| CVR | Card Verification Results |
| CVV | Card Verification Value |
| DCAF | Deferred Clearing Advice File |
| dCVV | Dynamic Card Verification Value |
| DDA | (1) Demand Deposit Account (in Visa Commerce transactions), (2) Dynamic Data Authentication |
| DDF | Directory Definition File |
| DDOL | Dynamic Data Object List |
| DEA | Data Encryption Algorithm |
| DES | Data Encryption Standard |
| DEX | Direct Exchange |
| DF | Dedicated File |
| DPA | Dynamic Passcode Authentication |
| EDC | Electronic Data Capture |
| EEPROM | Electronically Erasable Programmable Read-Only Memory |
| EF | Elementary File |
| EIRF | Electronic Interchange Reimbursement Fee |
| EMV | Europay, MasterCard, Visa |
| EPS | Express Payment Service |
| FCB | File Control Block |
| FCI | File Control Information |
| FCP | File Control Parameters |
| FMD | File Management Data |
| FPI | Fee Program Indicator |
| FSA | Flexible Spending Account |
| GCAS | Global Customer Assistance Service |
| GPO | GET PROCESSING OPTIONS |
| HRA | Healthcare Reimbursement Arrangement |
| HSM | Host Security Module |
| IA | Issuer Authentication |
| IAC | Issuer Action Code |
| IARS | International Automated Referral Service |
| IAVS | International Address Verification Service |
| IBAN | International Bank Account Number |
| IC | Integrated Circuit |
| ICC | Integrated Circuit Card |
| ICP | Intra Company Purchase |
| ICS | Interchange Control System |
| ICS (Fraud) | Issuer’s Clearinghouse Service |
| iCVV | Integrated Circuit Card (iCC) CVV |
| IEC | International Electrotechnical Commission |
| IFD | Interface Device |
| IIAS | Inventory Information Approval System |
| IIN | Issuer Identification Number |
| INS | Instruction Byte of the Command Message |
| IRS | Internal Revenue Service |
| ISA | International Service Assessment |
| ISF | Internal Secret File |
| ISO | International Organisation for Standardisation |
| ITT | Intertask Table |
| IVRU | IARS Voice Response Unit |
| IWK | Issuer Working Key |
| KID | Key Identifier |
| LATC | Last Online Application Transaction Counter |
| LCOL | Lower Consecutive Offline Limit |
| LEN | Length Byte |
| LRC | Longitudinal Redundancy Check |
| MAC | Message Authentication Code |
| MCC | Merchant Category Code |
| MCG | Merchant Category Group |
| MCFS | Merchant Central File Service |
| MDK | Master DEA Key |
| MF | Master File |
| MODS | MasterCard Open Data Storage |
| MOTO | Mail Order or Telephone Order |
| MRC | Message Reason Code |
| MS | Merchant Servicer |
| MSDI | Market-Specific Data Identifier |
| MTA | Maximum Transaction Amount |
| MTI | Message Type ID |
| MVI | Merchant Volume Indicator |
| MVV | Merchant Verification Value |
| NID | Network ID |
| NII | Network International Identifier |
| NRI | (Card) Not Received as Issued |
| OIF | Optional Issuer Fee |
| OTC | Over-the-Counter |
| OTP | One Time Password |
| PACM | Positive Authorization Capacity Management |
| PAD | Proprietary Authentication Data |
| PAN | Primary Account Number |
| PC | Processing Code |
| PCAS | Positive Cardholder Authorization Service |
| PCB | Protocol Control Byte |
| PCR | Processing Center Record |
| PDOL | Processing Options Data Object List |
| PIN | Personal Identification Number |
| PIX | Proprietary Application Identifier Extension |
| PK | Public Key |
| PKI | Certificate Authority Public Key Index |
| POS | Point-of-Service |
| PPCS | Preauthorized Payment Cancellation Service |
| PSE | Payment System Environment |
| PSP | Payment Service Provider |
| PUK | Personal Unblocking Key |
| PVKI | PIN Verification Key Index |
| PVS | PIN Verification Service |
| PVV | PIN Verification Value |
| RFC | Request for Copy |
| RFU | Reserved for Future Use |
| RID | Registered Application Provider Identifier |
| RND | Random Number |
| ROM | Read-Only Memory |
| RSA | Rivest, Shamir, Adleman algorithm |
| RPIN | Rewards Program Identification Number |
| RRN | Retrieval Reference Number |
| RTD | Real Time Decisioning |
| SAD | Signed Static Application Data |
| SAM | Secure Access Module |
| SAMA | The Saudi Arabian Monetary Agency |
| SDA | Static Data Authentication |
| SET® | SET Secure Electronic Transaction® |
| SFI | Short File Identifier |
| SI | Suppress Inquiries |
| SIGIS | Special Interest Group for IIAS Standards |
| SIP | Supermarket Incentive Program |
| SMF | Select Merchant Fee (Program) |
| SMS | Single Message Service |
| SRCI | Security Related Control Information |
| SRP | Stop Recurring Payment |
| STAN | Systems Trace Audit Number |
| STIP | Stand-in Processing |
| TAC | Terminal Action Code |
| TADC | Transaction Amount in Destination Currency |
| TC | (1) For VSDC, Transaction Certificate.(2) For BASE II, Transaction Code |
| TDOL | Transaction Certificate Data Object List |
| TID | Transaction Indicator |
| TIP | Terminal Integration Process |
| TPS | Third-Party Servicer |
| TPDU | Transport Protocol Data Unit |
| TLV | Tag-Length-Value (Format) |
| TSI | Transaction Status Information |
| TVR | Terminal Verification Results |
| TWO | TranzWare Online |
| T&E | Travel & Entertainment |
| UAT | Unattended Acceptance Terminal |
| UCAF | Universal Cardholder Authentication Field (MasterCard) |
| UCOL | Upper Consecutive Offline Limit |
| UDK | Unique DEA Key |
| URL | Uniform Resource Locator |
| V3S | Visa Smart Secure Storage |
| VAP | VisaNet Access Point |
| VAS | VisaNet Authentication Service |
| VAT | Value-Added Tax |
| VCMS | VisaNet Certification Management Service |
| VCP | Visa Commerce Processor |
| VCRFS | VisaNet Copy Request and Fulfillment Service |
| VDAS | VisaNet Documentation Automation Service |
| VIC | VisaNet Interchange Center |
| VIFD | Visa Issuer Fraud Detection |
| V.I.P. | Visanet Integrated Payment (System) |
| VIP | Very Important Person |
| VISC | Visa International Service Center |
| Visa MG | Visa Message Gateway |
| VLP | Visa Low-value Payment |
| VSDC | Visa Smart Debit and Visa Smart Credit |
| VSEC | Visa Secure Electronic Commerce |
| VSIL | Visa Information Security Line |
| VSS | VisaNet Settlement Service |
| VTM | Visa TravelMoney (card) |
| VTS | Visa Test System |
| VTSC | Visa Travel Service Center |
| XID | Electronic Commerce Transaction Identifier (TransStain) |