Last verified 2026-07-15
shopify meta pixel double purchase events
Duplicate Purchase events inflate ROAS until real CAC explodes. Deduplicate pixel + CAPI with event_id, then re-baseline 7 days before raising budgets.
The actual problem
Duplicate Purchase events inflate ROAS — you scale ads on fake conversions until real CAC blows up.
Do this
- Use Meta Test Events + order count for the same hour.
- Remove duplicate pixel / CAPI sources (theme + app + Shopify channel).
- Deduplicate with event_id on browser + server events.
- Re-baseline ROAS for 7 days before raising budgets.
Tools for this job
- Cashkiln checklist
Ads waste / tracking checks
Start with the free operator checks → cashkiln.com/leaks.
- Tillkiln
Scan storefront leaks that distort attribution
Scan the live storefront for stacking, OOS-buyable, and dead links before you blame ads → tillkiln.com.
- Intentkiln
More attribution procedures
Related intents
Scan the store before more ad spend
Tillkiln finds checkout and storefront leaks — stacking discounts, OOS still buyable, dead collection links — with a rough $ leak estimate.
Also from Cashkiln
- Tillkiln — scan checkout leaks before you buy more ads
- Netkiln sample — client-ready revenue-health page from a payouts CSV ($19 clean unlock)
- Free leak checklist — six operator checks
Deep-dive report — $29
Self-serve checklist expansion for this query family. PayPal Checkout. No call.