Enable `3-D Secure` (Payer Auth) {#opencart-config-3ds}
=======================================================

This section describes the required and optional configuration settings for `3-D Secure` (Payer Authentication) for the plugin.  
To enable `3-D Secure` follow these steps:

1. In `OpenCart` Back office, navigate to Extensions \> Extensions \> Payments \> `Visa Acceptance Solutions` `Unified Checkout`.
2. Click the Edit icon.
3. In the Edit `Visa Acceptance Solutions` pane, select from the dropdown or specify in the text box the configuration setting option you want to set.
4. Click the Save icon.
5. Repeat for each required setting and each optional setting you want to enable.

Required Settings
-----------------

The following settings are required:

* [Enable Basic Configuration](/docs/vas/en-us/isv-plugins/admin/all/rest/isv-plugin-o/built-by-us/opencart-overview/opencart-config-basic.md "")
* [Enable Unified Checkout](/docs/vas/en-us/isv-plugins/admin/all/rest/isv-plugin-o/built-by-us/opencart-overview/opencart-config-card-payment.md "")

The following setting is also required for enabling `3-D Secure` for the plugin:

Payer Authentication
:
When this setting is enabled, an extra layer of security is added at checkout.

Optional Settings
-----------------

The following setting is optional but recommended for regions enforcing `3-D Secure` for the plugin:

Enforce SCA for Saving Card
:
When this setting is enabled, card holders are `3-D Secure` challenged when saving a card.