EMV Tag Reference
Tools/EMV Tag Reference/77
Card (ICC)Format: bLength: var
77

Response Message Template Format 2

Tag ID
77
Format
b
Length (bytes)
var
Source
Card (ICC)

What it is

Response Message Template Format 2 is the TLV-encoded container the card uses to answer GET PROCESSING OPTIONS or GENERATE ACApplication CryptogramA cryptogram the card generates to approve or decline a transaction: TC (approve offline), ARQC (go online), or AAC (decline).. Because every element carries its own tag, the terminal can parse it generically. Format 2 (77) is the modern alternative to the tag-less Format 1 (80).

Where it appears

Returned by the card in the GPOGet Processing OptionsThe EMV command that starts a transaction; the card responds with the AIP and the records to read.View in glossary → or GENERATE ACApplication CryptogramA cryptogram the card generates to approve or decline a transaction: TC (approve offline), ARQC (go online), or AAC (decline). response.

Specification reference

Defined in: EMV 4.x Book 3 (Application Specification), Annex A — Data Element Dictionary

Decode & build this tag

🔓EMV TLV Decoder

Related tags

80Response Message Template Format 182Application Interchange Profile (AIP)94Application File Locator (AFL)
← Previous73 Directory Discretionary TemplateNext →80 Response Message Template Format 1