OutSystems applications are compliant with languages supported by Unicode in runtime. You only need to configure the Agile Platform with that option during installation, using the Configuration Tool. However, none of our desktop tools (Service Studio and Integration Studio) supports Unicode in design time. This means it is not possible to type Japanese characters in web screens or in expressions, for instance.
Nevertheless, to support applications that require Unicode in runtime, you can build an application in English, and then use the platform Multilanguage capabilities to make a Unicode version of the application, for example, in Japanese.
If you are having demand for the requirement of supporting non-western character sets in design-time, that is, inside the desktop tools, please
share that demand with us and the Product Management team.