Invoice week is when attribution stops being academic. Networks report installs; your analytics report fewer; finance wants a number to pay.
Build the sheet first
Columns that calm the room: campaign ID, date (in one timezone), network installs, internal attributed installs, cost, and a variance note. Fill variance with causes you can defend — lookback, click flooding filters, delayed postbacks — not with blame.
Decide a stance
Undisputed share can be paid. Overlap can be held. Fraud-flagged slices need the network’s own documentation, not a vague complaint.
Desktopmeadowbase’s Paid Media Reconciliation engagement produces that sheet from your exports so the call starts from shared evidence.