How can I trigger native 3DS2?

To enable the native 3D Secure 2 experience on your website, you need to include a specific parameter in your /payments request. The parameter you use depends on your Checkout API version:

• For Checkout API v69 or later: Include the authenticationData.threeDSRequestData.nativeThreeDS parameter and set its value to preferred.
• For versions earlier than Checkout API v69: Include the additionalData.allow3DS2 parameter and set its value to true.

Make sure to include all the other required parameters as outlined here: Native 3DS Make a payment.

If you do not include this parameter, Adyen will default to the redirect flow, sending a redirectShopper action in the response, which will take the customer to an external page to authenticate.