1 May 2026 · GTM · medium severity · fix verified 9 Sept 2026
Improved conversion tracking and attribution for Google Ads-linked properties on server-side Tag Manager
'These improvements are achieved via parallel browser signals when Google Signals is enabled.'
What it breaks
Ads-imported conversion counts from sGTM setups step up from the release date; the GA4-vs-Ads gap narrows without anything changing on your side.
Who it hits: Server-side Tag Manager setups linked to Google Ads with Google Signals on.
The fix
Re-run the gap diagnoser after 1 May 2026 before touching anything; annotate the date in Ads.
fix artifact · #A-001
GA4 vs Google Ads gap diagnoser
"GA4 says 214, Ads says 391." Seven causes, ranked, with the expected size of each and what to do — three are fixes, four are definitions.
- verified_on
- 2026-09-09
- next re-check
- 2026-12-01
- status
- current
Sources linked on every entry · artifacts stamped and re-verified · ← all changes