Event Delivery Failure Rate
Failure rate · The share of event delivery attempts that did not succeed.
Understand Failure rate in context.
Simply explained explanation
The share of event delivery attempts that did not succeed.
Professional explanation
Operational KPI for failed tag/server/API dispatches over all eligible sends.
Analytical explanation
Interpret failures by HTTP status, client timeouts, quota, consent mode and retries. A 200 response confirms transport, not necessarily usable analytics data.
Technical explanation
Custom failure rate = unsuccessful final delivery attempts / eligible final attempts. Distinguish transient 429 retries from permanent payload rejections.
Four complementary explanations — choose your level. Technical definitions are platform-specific where noted.
↗ How to use it
Monitor payload validation as well as transport.
⚠ Common interpretation mistake
Network success is not the same as platform ingestion.
Metric calculator
Adjust the inputs to see how the metric is calculated.