3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

Challenge Window SizechallengeWindowSize

Challenge Window Size in Challenge Request (CReq).

Source edition: Core 2.3.1.1 · Type: String · Length: 2 characters · Minimum length: 2 · Maximum length: 2

Baseline in CReq Required

Varies by context. Requirement or applicability varies by channel or message category. Select a specific context to resolve it. Usage and conditions ↓

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Valid values

CodeMeaning
01250 x 400
02390 x 400
03500 x 600
04600 x 400
05Full screen

Source: EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf, Table A.1, PDF pages 242. Read usage and conditions.

Usage in CReq

Dimensions of the challenge iframe that has been displayed to the Cardholder. The ACS shall reply with content that is formatted to appropriately render in this iframe to provide the best possible user experience. Preconfigured sizes are width x height in pixels of the challenge iframe displayed in the Cardholder Browser window.

Format and scope

Type: String · Length: 2 characters · Minimum length: 2 · Maximum length: 2

Source components: Not specified. Channels: 02-BRW. Categories: 01-PA, 02-NPA.

EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf, Table A.1, PDF pages 242

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 242

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

Document fingerprint (SHA-256): 6fdf0aba3fc1a765f96b74dad4069d1e189969f38f0023647021687daf589d6b