Diagnostics Count: Active Event Setup Issues

Diagnostics Count shows how many active issues Meta has flagged with your event setup that may reduce your EMQ score and attribution quality.

Metadata
Type	Number
Data Source	Meta Ads
Aggregation	Count

Metadata

Type

Number

Data Source

Meta Ads

Aggregation

Count

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

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.

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

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

Metric

Relationship

EMQ Score

Each diagnostic issue can reduce your overall EMQ score

Match Key Issues

Specific match key problems that appear as diagnostics

METRICS

Diagnostics Count: Active Event Setup Issues

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Formula

Example

How It Works

When to Use

Related Metrics