3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

Instalment Payment DatapurchaseInstalData

Indicates the maximum number of authorisations permitted for instalment payments.

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
AReqConditional

Conditional inclusion — source text

• Required if the Merchant and the Cardholder have agreed to instalment payments, i.e., if 3DS Requestor Authenticati on Indicator = 03. Omitted if not an instalment payment authenticati on • Required for 03-3RI if 3RI Indicator = 02.

Related condition fields: threeDSRequestorAuthenticationInd, threeRIInd.

Format and scope

Type: String · Length: Variable, maximum 3 · Maximum length: 3

Source components
3DS Server
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 255

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