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.
| Message | Baseline inclusion |
|---|---|
| AReq | Conditional |
Conditional inclusion — source text
Required if SDK Type = 01
Related condition fields: sdkType.
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.
- 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.
Format and scope
Type: Object · Length: 2 characters · Minimum length: 2 · Maximum length: 2
- Source components
- 3DS Server
- Device channels
- 01-APP
- Message categories
- 01-PA, 02-NPA
Object members
Nested presence rules apply when the parent object is supplied. These structures include carried-forward curation; consult the source for full conditions.
sdkVariant — SDK Variant
SDK implementation characteristics
Type: String · Length: 2
| Value | Meaning | Introduction tag |
|---|---|---|
01 | Native | Not tagged |
02–79 | Reserved for EMVCo future use (values invalid until defined by EMVCo) | Reserved |
80–99 | Reserved for DS use | Reserved |
Introduction tags are shown where recorded. An absent tag does not establish when a value was introduced.
wrappedInd — Wrapped Indicator
If the Default-SDK is embedded as a wrapped component in the 3DS Requestor App
Type: String · Length: 1
| Value | Meaning | Introduction tag |
|---|---|---|
Y | Wrapped (only present if value = Y) | Not tagged |
Introduction tags are shown where recorded. An absent tag does not establish when a value was introduced.
Version history
Field introduction tag: 2.3.1.1. 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 243
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
6fdf0aba3fc1a765f96b74dad4069d1e189969f38f0023647021687daf589d6bOfficial EMVCo specifications · Methodology and coverage limits