Issue
When viewing Profile Insights in Segment Unify, users may encounter a "No matching identifiers on event" error. This error prevents certain events from being associated with user profiles, impacting data completeness and downstream workflows.
Product
Segment Unify
Cause
This error occurs when an event payload does not include any identifiers defined in the space’s Identity Resolution rules. Without a matching identifier, Unify cannot associate the event with a user profile, resulting in the event being dropped from profile enrichment.
Resolution
- Review the Identity Resolution rules configured in your Segment Unify space.
- Ensure that all event payloads include at least one identifier specified in these rules (such as user_id, email, or other custom identifiers).
- Update your event tracking implementation to include the required identifiers in every event payload.
- After making changes, monitor Profile Insights to confirm that events are now being correctly associated with user profiles.