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## Problem and Background

All pixels, when fired, have a cookie2 value which is in a recognized format. The value should start as “uid=..”. If not, then it is flagged as an error.

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Cookie2 is used for tracking analytics across products and is needed for any personalization feature.

## Debugging Steps

Request the [Bloomreach Support](🔗) team to provide the list of URLs where the cookie2 value does not start as “uid=..”.

## Common Causes

This occurs when there are issues in the Br-trk.

## Solution

Check the Br-trk logic and resolve the issue if you can identify the issue. If not, contact [Bloomreach Support](🔗) for assistance.

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