Installing analytics is not the same as measuring the business. That was the useful point in the original article, and it is still where many reporting problems begin.
Define the source of truth
Decide which commerce, finance or lead system records the outcome the business actually cares about. Document whether reported amounts include tax, shipping, refunds and cancellations. For lead generation, record when a lead becomes qualified or becomes a sale rather than treating every form view as revenue.
Reconcile a defined period
Compare the authoritative total with analytics for the same dates and scope. Check duplicate events, missing payment methods, internal orders, cross-domain journeys, consent effects, referral handling and timezone boundaries. A difference is not automatically an analytics failure, but it must be understood before the report drives spending.
Keep a change log
Record tracking, checkout, tag and consent changes alongside campaign changes. Validate important events after releases and with representative payment paths. Do not assume yesterday’s working report proves today’s implementation.
Use channel attribution carefully
Attribution models describe the rules used to assign credit. They do not reveal a single objective cause of a sale. Read channel reports with cost, margin, customer type and the wider journey.
See our digital marketing goals guide, paid advertising services and CRO work.