# OpenapiClient::Secure3D21AuthenticationUpdateRequest ## Properties Name | Type | Description | Notes ------------ | ------------- | ------------- | ------------- **method_notification_status** | **String** | Indicates how the merchant received the 3DS method. | [optional] **acs_response** | [**ACSResponse**](ACSResponse.md) | | [optional] ## Code Sample ```ruby require 'OpenapiClient' instance = OpenapiClient::Secure3D21AuthenticationUpdateRequest.new(method_notification_status: RECEIVED, acs_response: null) ```