platform-vs-ledgerlisted

# Platform versus ledger Ad platforms grade their own homework. Every measurement decision that matters eventually comes down to comparing what the platform claims against a record it does not control. ## Pick the counter-source deliberately The payment processor, the CRM, or the operational record the business actually runs on. State which one you chose and why. A comparison against a second ad-platform-fed dashboard is not a reconciliation. ## Match the windows before you match the numbers This is where most reconciliations fail, and the failure looks like a data problem when it is an arithmetic one. Platform reporting defaults to a multi-day click window. A payment ledger is same-day. **Comparing a multi-day-click figure against one day of payments will never agree, and the disagreement carries no information.** Two valid comparisons: - One-day-click against the same calendar day, or - A multi-day total against the same multi-day total Pick one, write it down, and use the same one every time. Switching windows between reviews is how a stable account acquires an imaginary trend. ## Exclude what advertising cannot claim Filter the ledger to transactions the customer completed unassisted before you compare. Sales closed by a human are not self-serve, and most platforms correctly decline to claim them. Skip this and you will discover a gap that is your own sales team. Other exclusions worth making explicit: renewals on an existing mandate, manual and offline paymen