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  1. Compliance-and-Standards

Google Consent Mode v2 Validation

Last updated: April 26, 2026
Use this page to verify Google Consent Mode v2 implementation quality before release.

1. Required Consent Signals#

Verify all four keys are set and updated:
ad_storage
analytics_storage
ad_user_data
ad_personalization

2. Required Ordering#

Baseline expectation:
1.
Consent default is set before Google tags evaluate.
2.
In banner regions, user choice triggers consent update.
3.
In no-banner regions, defaults still resolve correctly (granted where banner is intentionally suppressed).
4.
No conflicting consent commands are pushed by other scripts.
For GTM, use Consent Initialization - All Pages trigger.
For full GTM implementation steps, see Google Tag Manager (GTM) Template Guide.

3. Browser Console Checks#

Expected result: you can see both default and update commands in order.

4. Tag Assistant Checklist#

1.
Open Tag Assistant preview.
2.
Test an EEA/UK session and reload with a fresh session.
3.
Confirm consent defaults are present before Ads/Analytics tag execution.
4.
Interact with banner and confirm consent update values change according to choice.
5.
Test a non-banner region session and confirm defaults are granted when banner is intentionally not shown.

5. GTM Best Practices#

Keep CMP tag in Consent Initialization, not regular Page View.
Avoid duplicate consent default commands from multiple templates.
Keep region overrides documented in container notes.
Do not hardcode one global denied default for every region.

6. Common Failures#

Consent defaults pushed too late.
Tags fire before consent defaults.
Missing one or more v2 keys in default or update calls.
Another plugin overwrites consent state.
No-banner sessions incorrectly receive denied defaults.

7. Evidence to Store for Audits#

Tag Assistant screenshots with event timeline (EEA banner flow + non-banner regional flow).
Browser console export of consent events.
CMP debug report from production domain.
See CYBEXO Debug Tool and Audit Checklist (Pre-Launch).
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IAB TCF v2.3 Support
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TCF API Validation