Transmitting merchant preferences
Use field vads_threeds_mpi to transmit your preference:
| Use case | Values | Description |
|---|---|---|
| CHALLENGE: with cardholder interaction | 1 | Deprecated. |
| 3 | 3DS Requestor Preference: allows to request strong authentication for the transaction. | |
| 4 | Challenge request mandate: allows to indicate that, due to regulatory reasons, strong authentication is required for the transaction. | |
| No merchant preference | 0 or absent or empty | The choice of the preference is transferred to the card issuer. If the issuer decides to perform an authentication without interaction (frictionless), the payment will be guaranteed. |
| 5 |