D1 API summary

Overview

This page provides a checklist of the D1 API endpoints typically required to integrate 3DS.

Direction indicates who calls the endpoint:

• Inbound: your issuer backend calls the D1 API.

• Outbound: the D1 backend calls your issuer backend.

Required APIs

API	Direction	Description
Get authorization token	Inbound	Get an OAuth 2.0 access token to call the D1 backend.
Create card or Register card	Inbound	Create or register a card in the D1 backend.
Renew card	Inbound	Renew a card.
Replace card	Inbound	Replace a card.
Delete card	Inbound	Delete a card from the D1 backend.
Notify 3DS card operation	Outbound	Receive 3DS operation notifications (for example, frictionless or challenge outcomes).

Optional APIs