Diagnostics Count shows how many active issues Meta has flagged with your event setup that may reduce your EMQ score and attribution quality.
Diagnostics Count = COUNT ( Active Diagnostic Issues )
| Metadata | |
|---|
| Type | Number |
| Data Source | Meta Ads |
| Aggregation | Count |
Example
Your pixel has 3 active diagnostic issues flagged by Meta this week.
| Issue | Severity | Impact |
|---|
| Missing external_id parameter | High | −0.8 EMQ points |
| Invalid phone format | Medium | −0.3 EMQ points |
| Low email coverage | Low | −0.2 EMQ points |
How It Works
Meta continuously monitors your Conversions API event data and flags issues that affect matching quality. Each diagnostic issue identifies a specific problem—like missing parameters, invalid formatting, or low coverage—that prevents Meta from matching events to users. Upstack syncs these diagnostics daily from Meta’s Events Manager API.
When to Use
| Scenario | Action |
|---|
| EMQ score dropped | Check diagnostics for new issues causing the decline |
| Setting up a new pixel | Monitor diagnostics during initial configuration |
| Poor attribution results | Prioritize high-severity diagnostics first |
| Weekly health check | Review and resolve any new flagged issues |
| Metric | Relationship |
|---|
| EMQ Score | Each diagnostic issue can reduce your overall EMQ score |
| Match Key Issues | Specific match key problems that appear as diagnostics |
