Shopify and GA4 revenue don't match
Shopify shows one revenue figure and GA4 shows a lower one, and nobody can explain the gap. Finance trusts Shopify, marketing reports from GA4, and every weekly meeting starts with a reconciliation. When the gap moves from week to week you cannot tell a tracking break from a real drop in sales.
We audit the purchase event end to end: consent, duplicate tags, missing transaction IDs, tax, shipping and discount handling, and orders that never reach a thank you page. Then we reconcile GA4 against Shopify orders in BigQuery, so the remaining gap is known, explained and watched by an alert.