Facebook Launches Graph API v25 and Marketing API v25 Updates
Facebook Graph API v25 adds Page Viewer Metric replacing legacy reach by June 2026, requiring migration. Webhooks mTLS certificates change to Meta CA by March 31, 2026, needing trust store updates. Ads Insights Async API adds error details. Metadata=1 parameter deprecated. Legacy reach and viewer metrics retire by June 2026, replaced by Media Views. Marketing API phases out ASC and AAC campaigns by Sept 2026. Graph API v19 and v20 deprecated in 2026.