Reply #3 by backlinktalk
Editorial follow-up: reconcile orders before analysing behaviour
Compare completed orders in the store's records with purchase events in the reporting system for the same period and time zone. Look for duplicates, missing events and differences in how cancelled orders are treated.
Use order identifiers privately where needed to investigate, and keep customer information out of public screenshots. Establishing that the basic counts agree is more valuable than optimising a funnel whose final event is being counted incorrectly.