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If you corrected information about an organization, then you will see the changes appear immediately in the place card on Yandex.Maps. However, you will be the only person that sees these changes until they pass moderation (you'll get the message “Thanks for updating information about this organization”). If the moderator determines that your correction doesn't infringe on any laws or other requirements, then your corrections will become visible to all users. If you are a company representative, then make changes in Yandex Business Directory.