Xandr Cookie Matching Service Tag Setup Guide

When using this tag with utag version 4.50 or later, you must set the utag.js always_set_v_id setting to true. This setting ensures that the visitor ID is available for cookie synchronization. For more information, see the utag 4.50 release notes and Considerations for tealium_visitor_id when upgrading to utag 4.50+.

Xandr Cookie Matching Service enables a buyer to associate the cookie that identifies a Tealium visitor and the cookie that identifies the user for Xandr.

Tag tips

• This tag will only fire once per Tealium Visit Session.
• Sends the following server-side attribute back to Tealium:
  • adnxs_uid
• If left blank, Tealium Account and Tealium Profile is automatically populated.

Tag configuration

Navigate to the Tag Marketplace to add a new tag. Read the Tag Overview article for general instructions on how to add a tag.

When adding the tag, configure the following settings:

• Tealium Account
• Tealium Profile

Data mappings

Mapping is the process of sending data from a data layer variable to the corresponding destination variable of the vendor tag. For instructions on how to map a variable to a tag destination, see Data Mappings.

The available categories are:

Standard