OReq — Operation Request

The OReq message sequence is created to communicate operational information serving as an alert, a reminder, report, or call to action.

Direction DS → 3DS Server/ACS

Full message description

The OReq message sequence is created to communicate operational information serving as an alert, a reminder, report, or call to action. This message is not part of the 3-D Secure authentication message flow.

11 top-level fields

Baseline inclusion. Effective requirements depend on transaction context. Check the field’s conditions and FAQ qualifications; select channel and category in the explorer.

Field	Baseline inclusion
dsReferenceNumberDS Reference Number	Required
dsTransIDDS Transaction ID	Required
messageExtensionMessage Extension	Conditional
messageTypeMessage Type	Required
messageVersionMessage Version Number	Required
opCategoryOperation Category	Required
opDescriptionOperation Description	Required
opExpDateOperation Expiration Date	Required
opPriorTransRefOperation Prior Transaction Reference	Optional
opSeqOperation Sequence	Required
opSeverityOperation Severity	Required

Source

EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf · Section 2.4.9, Table B.10

Official EMVCo specifications · Coverage and review limits