- If the locale is not available in Pontoon yet, consult this document for instructions on how to add it.
- File a bug to create a new Mercurial repository in l10n-central. Several bug templates, including one to request a new repository, are available in this Wiki page. For more information about these templates, refer to this document.
- Push at least one change to the repository, otherwise Pontoon will not pick it up during sync. The safest change is to initialize the
toolkit/chrome/global/intl.propertiesfile with the correct values (example).
Once the repository is available and contains at least one commit, the locale can be added to the Firefox project in Pontoon.