Moodle 3.5 As an admin, go to Site administration > Privacy and policies > Plugin privacy registry TEST: Check that the core_form is reported as compliant and describes the user preference filemanager_recentviewmode . Log in as a student (or teacher or just stay logged in as admin, it does not really matter). Go to the Edit your profile page (or any other form with a file picker element) Change the way how files are displayed in the file picker - as icons, tree or with details. Export the personal data for the user (you can make use of the test script at https://docs.moodle.org/dev/Privacy_API/Utilities for that) TEST: Confirm that the export contains the file System/User preferences/core_form.json which exports and explains the value of the preference. Moodle 3.4 Install https://moodle.org/plugins/tool_dataprivacy so that you have access to the Plugin privacy registry Follow the same tests as in 3.5 Moodle 3.3 No manual testing needed, the implementation covered by privacy/tests/provider_test.php