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How do I reconcile platform data discrepancies?

reconcile platform data ga4 facebook reconciliation match attribution windows platform data discrepancy solutions transaction id deduplication

Quick Answer

Accept that 10-15% discrepancy between platforms is normal -- they use different attribution models, tracking methods, and data collection rules. To reconcile: (1) Audit tracking implementation for consistency -- ensure conversion events are defined identically across GA4, Meta Pixel, Google Ads. (2) Establish a single source of truth (your CRM or data warehouse), not any ad platform. (3) Create weekly/monthly reporting rhythms comparing platform data against your source of truth. (4) Implement server-side tracking to send consistent data to all platforms simultaneously. (5) Use ETL tools to standardize schemas across platforms in a central warehouse for unified analysis.

Full Answer

While perfect alignment is impossible, you can reduce variance between platforms from 50%+ to 10-30% through server-side tracking, matched attribution windows, and proper deduplication. The goal isn't identical numbers—it's understanding what each platform tells you. How to Narrow the Gap 1. Use Server-Side Tracking for Both Facebook CAPI for Facebook conversions:

  • Server sends purchase events directly to Facebook
  • Bypasses ad blockers completely
  • Includes user identifiers (email hash, phone hash)
  • Receives full attribution credit regardless of browser blocking GA4 server-side (GTM server or WordPress plugin):
  • GA4 receives data from your server, not browser
  • Ad blockers can't interfere
  • Both platforms see identical conversion events
  • Reduces data visibility discrepancy from 30-40% to minimal WordPress-native advantage: WordPress plugins that implement both Facebook CAPI and GA4 server-side send identical data to both platforms:
  • Same timestamp
  • Same user identifiers (where available)
  • Same transaction value -...

Sources

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Cherry Tree by Seresa - https://seresa.io/seed/utm-attribution/reconcile-platform-data