GA4 added diagnostic alerts for problematic User-ID implementations

Date

Oct 2, 2025

Regions

Global

Primary source

Google Analytics Help

Sources

• open_in_new
  What's new archive (2019-2025) - Google AnalyticsGoogle Analytics Help · Oct 2, 2025
• open_in_new
  [GA4] User-IDGoogle Analytics Help · Oct 2, 2025

Related changes

• Jan 16, 2026GA4 added per-conversion attribution settings and cross-channel conversion management for Ads (beta)
• Nov 19, 2025GA4 renamed 'Cost data import' to 'Campaign data import'
• Nov 5, 2025GA4 user-provided data refocused on activation; no longer used as a reporting identity identifier
• Nov 5, 2025GA4 launched new user-provided data infrastructure; early adopters migrate by Q2 2026
• Oct 7, 2025GA4 added native Meta Ads and TikTok Ads cost data import integrations
• Sep 26, 2025GA4 added a native Pinterest Ads cost data import integration

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