EMV 3DS message reference

Find each message’s direction, purpose and linked field requirements for Core Specification 2.3.1.1.

• AReqAuthentication Request3DS Server → DS → ACS
• AResAuthentication ResponseACS → DS → 3DS Server
• CReqChallenge Request3DS SDK/Browser → ACS
• CResChallenge ResponseACS → 3DS SDK/Browser
• RReqResults RequestACS → DS → 3DS Server
• RResResults Response3DS Server → DS → ACS
• PReqPreparation Request3DS Server → DS
• PResPreparation ResponseDS → 3DS Server
• OReqOperation RequestDS → 3DS Server/ACS
• OResOperation Response3DS Server/ACS → DS
• ErroError MessageAny → Any