3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

Read OrderreadOrder

Read Order in Preparation Response (PRes).

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

Baseline in PRes Required

Baseline from the published source; transaction-context evaluation is unavailable for this field. Usage and conditions ↓

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Valid values

CodeMeaning
01Direct order/FIFO (First In First Out)
02Reverse order/LIFO (Last In First Out

Source: EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf, Table A.1, PDF pages 273. Read usage and conditions.

Reserved values

CodeMeaning
03–79Reserved for EMVCo future use (values invalid until defined by EMVCo)
80–99Reserved for DS use

Usage in PRes

Indicates the order in which to process the card range records from the PRes message.

Format and scope

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

Source components: DS. Channels: Not specified. Categories: Not specified.

EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf, Table A.1, PDF pages 273

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 273

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

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