KnowledgeMissing Transaction ID Rate
Missing IDs · The proportion of purchase events that lack a usable order identifier.
Understand Missing IDs in context.
Simply explained explanation
The proportion of purchase events that lack a usable order identifier.
Professional explanation
Share of purchase events missing a valid, nonblank transaction_id, a critical data-quality attribute.
Analytical explanation
Missing IDs make reconciliation and deduplication unreliable. Investigate custom cart flows, thank-you-page triggers and consent-timing paths.
Technical explanation
Count purchase events where transaction_id is absent/invalid, divided by all collected purchase events. Validate in raw event payloads; GA4 reporting may apply distinct handling.
Four complementary explanations — choose your level. Technical definitions are platform-specific where noted.
↗ How to use it
Alert whenever the rate rises above zero.
⚠ Common interpretation mistake
A placeholder such as “undefined” is not a valid transaction ID.
Metric calculator
Adjust the inputs to see how the metric is calculated.