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
`dsReferenceNumber`DS Reference Number	Required
`dsTransID`DS Transaction ID	Required
`messageExtension`Message Extension	Conditional
`messageType`Message Type	Required
`messageVersion`Message Version Number	Required
`opCategory`Operation Category	Required
`opDescription`Operation Description	Required
`opExpDate`Operation Expiration Date	Required
`opPriorTransRef`Operation Prior Transaction Reference	Optional
`opSeq`Operation Sequence	Required
`opSeverity`Operation 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