Unannounced 'data transmission controls' found in Google tag settings to restrict ads, analytics, diagnostics

Google tag settings in Google Ads, GA4 and Campaign Manager 360 gained controls that decide what is sent when consent is denied: advertising data (limited with redacted identifiers, or blocked), behavioral analytics data and diagnostic data can each be restricted. Simo Ahava flagged the setting in December 2025 as 'basically a Basic Consent Mode type control on top of an Advanced Consent Mode setup'.

• Path in Google Ads: Tools > Data manager > Google tag > Manage > Manage data transmission (requires consent mode already active).
• GA4: Admin > Data collection and modification > Data streams; CM360: Floodlight > Google tag settings.
• Tags are re-fired automatically once consent is granted.
• Help doc: https://support.google.com/google-ads/answer/16054531.