Enforcing Strong Customer Authentication {#pshop-config-sca}
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Select the Enforce Strong Customer Authentication setting to prompt a `3-D Secure` challenge when a customer saves their credit card information. The customer is challenged to authenticate when a transaction is declined as reported by response code `478(Strong Customer Authentication required)`. After the transaction is declined, another request is sent for the same order.

> IMPORTANT
> The Enforce Strong Customer Authentication setting is available only when the Payer Authentication/` 3-D Secure ` in the general Plugin setting) and Tokenization in the fraud management Plugin setting) are enabled. See [Configuration Settings](/docs/vas/en-us/isv-plugins/admin/all/rest/isv-plugin-o/built-by-us/pshop-overview/pshop-config-intro/pshop-config-settings/pshop-config-settings-info.md "") for information about these settings and [Configuring Plugin Settings](/docs/vas/en-us/isv-plugins/admin/all/rest/isv-plugin-o/built-by-us/pshop-overview/pshop-config-intro/pshop-config-settings.md "") for information about how to set them.  
> Follow these steps to enable Enforce Strong Customer Authentication:

1. Open `PrestaShop` Back Office and select Modules \> Module Manager from the Dashboard. The Module Manager page opens.
2. Find the Plugin in the Payment section on the Module Manager page, or enter `Visa Acceptance Solutions`` Official` in the Search field and click Enter.
3. Click Configure. The Configure `Visa Acceptance Solutions` Official page opens.
4. Select the FRAUD MANAGEMENT SETTINGS tab.
5. Set the Enforce Strong Customer Authentication setting to `Yes`.
6. Click Save.