Your site can require that anonymous shoppers log in before they check out. This feature can be used for anonymous shoppers who will log into either an individual account or a business account.
To prevent guest checkout:
In Oracle Commerce Cloud Service, click the Settings tab.
Click Shopper Settings.
Under Guest Checkout, clear the Allow checkbox.
In addition to selecting this setting, your pages must be modified at a widget code-level to restrict access to the Checkout UI itself. For details on doing so, see “Manage Guest Checkout” in the Extending Oracle Commerce Cloud Service guide.