Issue

In Segment Unify, you may observe that user profiles contain more identifiers (such as email addresses) than allowed by your configured Identity Resolution rules. For example, a profile may display four email addresses stitched together even though your settings restrict profiles to a maximum of three email addresses in one year.

Product

Twilio Segment

Environment

Segment Console

Cause

This behavior occurs when running a Reverse ETL backfill containing events with backdated timestamps. Ingesting events with timestamps that predate the current evaluation window causes the annual limit calculation to be bypassed, allowing additional identifiers to stitch to the profile beyond your configured limit.

Resolution

To remove unwanted identifiers from affected profiles and restore them to your configured limit, complete the following steps:

1. Identify the target profile and the specific identifier (e.g., email address) that needs to be removed.
2. Call the Delete Profile Identifier API to disassociate and remove the extra identifier from the profile.
3. Refresh the profile view in the Segment Unify explorer to confirm that the profile now accurately reflects your configured identifier limits.

Additional Information

To avoid similar identity stitching issues during future data loads, verify that backfilled event timestamps align with expected processing windows before executing Reverse ETL syncs.