{"id":238,"question":"Why do GA4 and Facebook conversion numbers never match?","short_answer":"They use fundamentally different measurement systems. GA4 uses session-based, last-click attribution with first-party cookies. Meta uses 7-day click \/...","preview":true,"full_answer_at":"https:\/\/seresa.io\/seed\/utm-attribution\/why-numbers-mismatch","api_docs":"https:\/\/seresa.io\/cherry-tree-api"}