3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

ACS Reference NumberacsReferenceNumber

ACS Reference Number in Authentication Response (ARes).

Source edition: Core 2.3.1.1 · Type: String · Length: Variable, maximum 32 · Maximum length: 32

Baseline in ARes Required

Required across all channels and categories. Usage and conditions ↓

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Usage in ARes

Unique identifier assigned by the EMVCo Secretariat upon Testing and Approval.

Conditional inclusion — source text

Required in the ORes message for an ACS receiving an OReq message.

Format and scope

Type: String · Length: Variable, maximum 32 · Maximum length: 32

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 203

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 203

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

Document fingerprint (SHA-256): 6fdf0aba3fc1a765f96b74dad4069d1e189969f38f0023647021687daf589d6b