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

First, go to Tealium’s tag marketplace and add the Basic Technologies Cookie Matching Service tag (Learn more about how to add a tag).

After 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