Google Tag Manager has introduced a new Tag Diagnostics tool to help identify and resolve issues with website tags, ensuring accurate data collection. This tool can be accessed from the Google tag settings in both Google Ads and Google Analytics, as well as on the landing page of Tag Manager when issues are detected.

Accessing the Tag Diagnostics Tool

1. Navigate to your Google Tags and click the tag you wish to examine.
2. Navigate to the Tag quality subsection under Your Google tag section.
3. View the tag quality status and click to find and fix detected issues.

Tag Quality Statuses

• Excellent: No issues detected; tags are fully optimized.
• Good: No issues detected, but recommendations are provided to improve tag quality.
• Needs attention: Issues detected that need attention but are not critical.
• Urgent: Critical issues detected that must be fixed immediately to preserve measurement.

Diagnostics

The tool provides several diagnostics to help identify and fix tagging issues:

• Additional domains detected for configuration: Specify all domains using the Google tag.
• Config command out of order: Ensure gtag config commands are positioned before event commands.
• Missing conversion linker: Add a conversion linker tag to your Google Tag Manager container.
• Some of your pages are not tagged: Visit the Tag coverage summary to find and fix untagged pages.

Gradually Rolled Out Diagnostics

Some diagnostics are being gradually introduced and may not be available in all accounts:

• Consent missing for EEA users: Verify data is labeled with consent.
• Some pages missing consent for EEA users: Ensure data is labeled with consent on all pages.
• Update your consent settings: Manage default consent settings to attest to sending data as consented.
• Website/App missing EEA consent for ads personalization: Upgrade to consent mode v2.
• Consent mode installation out of order: Verify correct positioning of consent mode commands.
• Verify consent mode set up as 0% consent rate detected: Troubleshoot your consent setup.
• 0% consent rate detected in some regions: Troubleshoot your consent setup to avoid loss in measurement and broken remarketing outside the EEA.

This tool aims to streamline the process of maintaining high-quality tags, ensuring accurate and reliable data collection for better measurement and analysis. For more details, check out the help center below.