3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

Authentication MethodauthenticationMethod

Authentication Method in Results Request (RReq).

Source edition: Core 2.3.1.1 · Type: Array

Baseline in RReq Conditional

Conditional. Same classification across the remaining channels and categories. • Required in the ARes message if Transaction Status = C or D. • Required in the RReq message if Transaction Status = Y or N. Usage and conditions ↓

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Field value definitions

Field-wide definitions. Check message-specific restrictions in usage and conditions.

CodeMeaning
01Static Passcode
02SMS OTP
03Key fob or EMV card reader OTP
04App OTP
05OTP Other
06KBA
07OOB Biometrics
08OOB Login
09OOB Other
10Other
11Push Confirmation
12Decoupled
13WebAuthn
14SPC
15Behavioural biometrics
16Electronic ID

Source: EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf, Table A.1, PDF pages 208, 209. Read usage and conditions.

Reserved values

CodeMeaning
17–79Reserved for EMVCo future use (values invalid until defined by EMVCo)
80–99Reserved for DS use If SDK Type = 02 and Split-SDK Type/Limited Indicator = Y, a value of 01 or 06 is not valid.

Usage in RReq

Indicates the list of authentication types the Issuer will use to challenge the Cardholder, when in the ARes message or what was used by the ACS when in the RReq message. Note: For 03-3RI, only present for Decoupled Authentication.

Conditional inclusion — source text

• Required in the ARes message if Transaction Status = C or D. • Required in the RReq message if Transaction Status = Y or N.

Related condition fields: transStatus.

Format and scope

Type: Array

Source components: ACS. Channels: 01-APP, 02-BRW, 03-3RI. Categories: 01-PA, 02-NPA.

EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf, Table A.1, PDF pages 208, 209

Transaction context

This reference covers the published source edition. Use the explorer to inspect this field and any applicable transaction conditions. Scheme programme requirements are not inferred from the protocol edition.

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Sources and related references

EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf, Table A.1, PDF pages 208, 209

Source review status: carried-forward. Carried-forward material has not acquired a new verification claim.

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