Scenario:

You have a Backoffice where you manage the translations

As soon as the translations are edited the changes will reflected in the mobile app after it's restarted. All of that is achieved by replacing dynamically the resource containing the translations, so no need for Local Entities. Check this article for more details on this approach: https://www.linkedin.com/pulse/dynamic-translations-outsystems-mobile-apps-save-text-dos-santos/