3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

Multi-TransactionmultiTransaction

Multi-Transaction in Authentication Request (AReq).

Source edition: Core 2.3.1.1 · Type: Object · Length: Variable

Baseline in AReq Optional

Optional across all channels and categories. Usage and conditions ↓

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Usage in AReq

Additional transaction information in case of multiple transactions or Merchants.

Format and scope

Type: Object · Length: Variable

Source components: 3DS Server. Channels: 01-APP, 02-BRW, 03-3RI. Categories: 01-PA, 02-NPA.

Object members

Nested presence rules apply when the parent is supplied. Consult the source for full conditions.

merchantAmount — Merchant Amount

merchantCurrency — Merchant Currency Code

merchantExponent — Merchant Currency Exponent

sellerId — Seller ID

avValidityTime — AV Validity Time

EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf, Table A.1, PDF pages 260

Scoped FAQ qualifications

  • FAQ 27 — Applicable object-bearing protocol versions

    Only when the parent JSON object is present

    Evaluate nested presence conditions when the parent object is present. In multiTransaction, merchantList is required when the object is supplied; merchantAmount remains optional.

    EMVCo_3DS_Specification_FAQs_8-April-2026.pdf, page 9

  • FAQ 73 — Applicable object-bearing protocol versions

    An optional or conditionally optional field is sent empty

    An empty optional field produces error 203 under Req 309. When the empty JSON object contains mandatory data, error 201 may be returned.

    EMVCo_3DS_Specification_FAQs_8-April-2026.pdf, page 23

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 260

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

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