To localize the smabundle.properties file:
<INSTALL_DIR>/resources/extn/<Extn_SMA_Bundle>_<language>_<country>.properties where <Extn_SMA_Bundle> is the bundle file containing the extended resource bundles for System Management Administration Console.
smabundle_<language>_<country>.properties file pertaining to the locale.
For example, if you want to localize the application for France in French language, copy smabundle.properties to the smabundle_fr_FR.properties file.
The smabundle.properties file is localized. After this, perform the post-localization steps on the server side.