A. If the US site is configured to have French as an additional language, the system cannot tell if www.example.com/fr is the French site or the French translation of the English site.

B. You receive an error message on the Settings page when setting the Site Base URL to a recognized locale, preventing you from using it as the subfolder.

C. Commerce Cloud has logic built in to avoid any confusion between subfolders and locales, editing the URL when generating the page to differentiate between the locale and the subfolder name.

D. Commerce Cloud does not understand locale codes when used as a subfolder, leading to 404 not found messages in the shopper browser.