Google is warning that Google Tag Manager snippets will soon stop recognizing or waiting for gtag(‘config’) commands.
This mainly affects websites that have a GTM container installed but still use commands such as gtag(‘config’, ‘G-…’) for GA4 or gtag(‘config’, ‘AW-…’) for Google Ads configuration. Google considers this combination an unsupported implementation.
Affected GTM container owners have reportedly received email notifications, and Google has published documentation showing which implementations are supported and unsupported.
The change is connected to Google’s broader move to unify Google Tag and Google Tag Manager. Advertisers and analytics teams using a mixed GTM/gtag setup should therefore review their implementation and move configuration into the supported GTM or Google Tag setup.
Thanks for sharing Hana Kobzová.
