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+# Upgrade notes
+
+The following notes must be taken into consideration when upgrading to Kapua 2.0.0-SNAPSHOT. 
+
+Please check each PR's **Upgrade Notes** more details.
+
+- [Device Registry] [PR #3974](https://github.com/eclipse/kapua/pull/3974) For installations based on MariaDB and MySQL databases, the `client_id` columns are now case-sensitive.