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How to Merge Anonymous IDs with a User ID in Segment

Objective

This article explains how to merge multiple anonymous IDs with a single user ID in Segment, enabling unified user tracking across different environments. The process helps ensure accurate user profile consolidation and activity attribution.

 

Product

Segment

 

Environment

Segment Console

 

Procedure

  1. Identify the anonymous IDs and the user ID you wish to merge.
  2. Send an event to Segment that includes both the anonymousId and userId in the payload.
  3. Ensure the user profile is not at its limit for anonymous IDs.
  4. After sending the event, verify the merge in the Profile Insights tab within the Segment Console.

 

 

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