If set to true, you will only perform the [3D Secure 2 authentication](https://docs.adyen.com/online-payments/3d-secure/other-3ds-flows/authentication-only), and not the payment authorisation. Default
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "#/components/schemas/DetailsRequestAuthenticationData",
"title": "DetailsRequestAuthenticationData",
"properties": {
"authenticationOnly": {
"x-addedInVersion": "69",
"default": false,
"description": "If set to true, you will only perform the [3D Secure 2 authentication](https://docs.adyen.com/online-payments/3d-secure/other-3ds-flows/authentication-only), and not the payment authorisation.\nDefault: *false**.",
"type": "boolean"
}
},
"type": "object"
}