Validating that Google Tag Manager code is making a call to Google Tag Manager

To validate that Google Tag Manager code is making a call to Google Tag Manager:

1. On one of the pages of your site which includes the Google Tag Manager code, right-click the page and click Inspect.
2. On the Google Developer Toolbar, click the Network tab.
3. Refresh the page.
4. In the Filter search bar, type gtm.
5. Verify that the script appears, that the call was made to Google Tag Manager, and verify the ID of the container that was called.