Google Tag Manager: Create a Benchmark Report & Validate Data

When this step is complete, pageviews will be sent to parallel Google Analytics properties. The existing on-page GA code will send pageviews to the client's existing GA properties. The new GTM container will send pageviews to the new, mirrored GA properties used for validating GTM data.

Create a Google Tag Manger Container

1. Log into Google Tag Manager
2. Set-up a new container for a property or select a container, click on *Admin* tab
3. In *Admin* tab, under the *Container* column, select *Install Google Tag Manager*
4. In Webflow, log into your *Dashboard* and go to the *Custom Code* section
5. Add the first GTM tracking code in the *Head Code* of your Webflow website. Click Save Changes. (If not Webflow, add to the Head Code Section of your site)
6. Add the second GTM tracking code to the *Body Code* section. Click Save Changes.

Add a Pageview Tag

1. Publish the site
2. Inside the Google Tag Manager interface, select the *Variables* section from the left-hand menu, then click *New*
3. Select the *Constant* variable type, and past the UA Number from the Google Analytics Property you created
4. Name the variable *GA Tracking ID*
5. Next, click the *Tags* menu item, and click *New*
6. Select *Google Analytics*, then *Universal Analytics*
7. In the Configuration section, enter {{GA Tracking ID}}
8. Click *Continue*, then *All Pages*, and then *Save*

You will now track pageviews in two properties, one from your on-page code, and the other from the Google Tag Manager container you created.