Transaction Type

What it is

Transaction Type is a 1-byte numeric code (aligned with ISO 8583 processing code, digits 1–2) that tells the card what kind of transaction is running: purchase, cash advance, purchase with cashback, refund, and so on. It affects CVMCardholder Verification MethodHow the cardholder is verified — for example offline PIN, online PIN, signature, or no CVM required.View in glossary → condition evaluation and usage-control checks and is a cryptogram input.

Where it appears

Set by the terminal; supplied to the card through the PDOL/CDOL.

Specification reference

Defined in: EMV 4.x Book 4 (Cardholder, Attendant & Acquirer Interface), Annex A

Bit-level definitions below follow: EMV Book 4, Annex A — Transaction Type (1 byte, numeric)

Bit & value breakdown

Example values

Decode & build this tag

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