How do I debug Measurement Protocol?

Cherry Seed

Use the debug endpoint (/debug/mp/collect) to get validation errors before sending real events. Add debug_mode parameter to see events in GA4 DebugView. Log all request/response data in your code. Check GA4 Real-Time reports after sending. Common issues: wrong credentials, malformed JSON, missing required fields.

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Debugging Measurement Protocol: Step 1: Use debug endpoint Step 2: Log everything Step 3: DebugView verification Add to payload: Watch in GA4 → Configure → DebugView Common errors: | Error | Cause | Fix | |-------|-------|-----| | 403 | Invalid API secret | Regenerate secret | | No response | Wrong endpoint | Check URL | | Missing in reports | Invalid client_id | Check format | | Wrong data | Malformed JSON | Validate JSON | Checklist: 1. ✓ Debug endpoint returns valid 2. ✓ HTTP 204 on production...

Cherry Seed

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