No. 01
PERIOD 12 MAY — 11 JUN 2026 · CLOSED
- changes logged upstream
- 12
- entered below
- 4
- fault codes touched
- 4
- carried forward
- 2
What moved this period.
Four upstream changes worth entering this period. Two need action if you run Meta CAPI or lean on Safari traffic: the dedup window narrowed, and another class of cookies got capped. Nothing else is structural, and two items carry forward to No. 02.
AFFECTS YOU IF — Meta CAPI · Safari-heavy traffic · Shopify custom pixels
Dashboards that poll the Data API too often now hit the token quota mid-month. Looker Studio tiles go blank and get blamed on GA4 breaking. Turning the refresh down and consolidating duplicate reports closed it.
Server events that arrive late now fall outside the window, so they miss the event_id match against their browser twin. The same sale can count twice, quietly. Needs a re-test once a full week of post-change data lands.
Another class of script-set cookies now expires inside 24 hours instead of seven days. Returning Safari visitors arrive without a cookie, so GA4 counts them as new and their attribution drifts toward direct. Watching match rate before deciding on a server-side move.
The diagnostics tab now flags low match-rate setups it used to pass silently. Nothing broke; the warning is just newly visible. No action beyond noting which accounts it lights up.
CARRIED FORWARD →
- Meta CAPI dedup: re-test once a full week of post-change data is in.
- Safari cookie cap: watch returning-visitor match rate into No. 02.