Basis Technologies (formerly Centro) 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+.

Tag tips

• This tag will only fire once per Tealium visit session.

• Sends the following server-side attribute back to Tealium:

  • externalID

• If left blank, Tealium Account and Profile automatically populates.

Tag configuration

Go to the tag marketplace to add a new tag. For more information, see About tags.

When adding the tag, configure the following settings:

• Tealium Account
• Tealium Profile

Data mappings

Data mappings send values from data layer variables to the corresponding variables in the vendor tag. For more information, see About data mappings.

The available categories are:

Standard