Over the course of the last several days, this issue became more popular than ever, therefore, I decided to write a quick blog post. So here’s the problem: you enable Google Tag Manager Preview and Debug mode and see that a certain (or maybe multiple) Universal Analytics tag is displayed as
Posts Tagged Under: gtm
In the middle of October 2018, Google Tag Manager silently introduced a new feature that caused some questions in the GTM community (including me), an Undefined variable.
In this quick guide, I’ll shed some light on what an Undefined variable in Google Tag Manager is and where you can use it.
First of all, you