3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

OOB App URLoobAppURL

Universal App Link to an Authentication App used in the OOB authentication. The OOB App URL will open the appropriate location within the OOB Authentication App. Refer to Table 1.3 for the Universal App Link definition.

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
CResConditional

Conditional inclusion — source text

Only present for [ ACS UI Type = 04 if the OOB App Label is present OR ACS UI Type = 06 ] AND if: • OOB App URL Indicator = 01 in the CReq message; AND • the ACS uses the OOB Authenticati on App automatic switching feature for this transaction

Related condition fields: acsUiType, oobAppURLInd.

Format and scope

Type: String · Length: Variable, maximum 2048 · Maximum length: 2048

Source components
ACS
Device channels
01-APP
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 263

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