Census change history: LinkedIn Sync Failures - server responding with status 426

Census reported a major incident affecting some customers: LinkedIn syncs failed with status 426, and new and existing LinkedIn Destination tests could fail. It started at 2026-09-16 11:42 UTC and was resolved at 2026-09-16 15:33 UTC, lasting 3 h 50 min. Impacted syncs should recover on their next scheduled or manual run; destination connections and tests should work again.