3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

Authentication ValueauthenticationValue

Payment System-specific value provided by the ACS or the DS using an algorithm defined by Payment System. Authentication Value may be used to provide proof of authentication.

Explore this field with transaction context

Message inclusion

Baseline inclusion. Effective requirements depend on transaction context. Check the field’s conditions and FAQ qualifications; select channel and category in the explorer.

MessageBaseline inclusion
AResConditional
RReqConditional

Conditional inclusion — source text

01-PA: Required if Transaction Status = Y or A Conditional based on DS rules if Transaction Status = I Omitted from the RReq message when sent as an abandonment notification 02-NPA: Conditional based on DS rules.

Related condition fields: transStatus.

Format and scope

Type: String · Length: Variable, maximum 4000 · Maximum length: 4000

Source components
ACS, DS
Device channels
01-APP, 02-BRW, 03-3RI
Message categories
01-PA, 02-NPA

Version history

No field introduction version is tagged in the dataset. Introduction tags are curated metadata, not a full history of changes. Compare versions and understand coverage.

Source and review status

EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf, Table A.1, PDF pages 210

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

Source document fingerprint

EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf

6fdf0aba3fc1a765f96b74dad4069d1e189969f38f0023647021687daf589d6b

Official EMVCo specifications · Methodology and coverage limits