| missing or empty or 0 | - 3DS2: The choice of the preference is transferred to the card issuer (No
Preference).
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| 1 | Deprecated. |
| 2 | - 3DS2: Allows to request authentication without interaction (frictionless).
Requires the “Frictionless 3DS2” option. 2 types of exemptions are currently supported: - Low value transactions
In Europe, for payments in euros, you can request an exemption from strong authentication, for transactions of less than €30, and within the limit of either 5 successive operations or a cumulative amount of less than €100. If the amount is higher than €30, the value transmitted by the merchant is ignored and the choice of the preference is transferred to the card issuer (No Preference). For payments made in a currency other than euro, a request for frictionless is transmitted to the issuer. If the frictionless request is accepted, the transaction does not benefit from liability shift in case of chargeback. - Transactional Risk Analysis (Acquirer TRA)
If your store has the "TRA Acquirer 3DS2" option, you can ask the issuer for an exemption from strong authentication if the amount is below the threshold set by your financial institution. If the frictionless request is accepted, the transaction does not benefit from liability shift in case of chargeback. This exemption reason is only available for transactions made on the CB network. The functionality will be extended to the Visa and Mastercard networks at a later date. The “Acquirer 3DS2 TRA" activation option is subject to the prior agreement of your financial institution.
If the store does not have the “Frictionless 3DS2” option, the choice of the preference is transferred to the card issuer (No
Preference).
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| 3 | - 3DS2: CHALLENGE REQUESTED: 3DS Requestor Preference. Allows to request strong authentication for the transaction.
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| 4 | - 3DS2: CHALLENGE REQUESTED: mandate. Allows to indicate that, due to regulatory reasons, strong authentication is required for the transaction.
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| 5 | - 3DS2: NO PREFERENCE: 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.
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