# Which Problems Are Solved
Zitadel encounters a migration error when setting `restricted languages`
and fails to start.
# How the Problems Are Solved
The problem is that there is a check that checks that at least one of
the restricted languages is the same as the `default language`, however,
in the `authz instance` (where the default language is pulled form) is
never set.
I've added code to set the `default language` in the `authz instance`
# Additional Context
- Closes https://github.com/zitadel/zitadel/issues/9787
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Co-authored-by: Livio Spring <livio.a@gmail.com>
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