Area 1
A sheet-as-system map: what it holds, who relies on it, where it breaks
We map the sheet the way a system is mapped — what each area really holds, which team relies on which column, which rows are exceptions, and the tribal rules that keep it alive. The map is what makes "what is this sheet really doing for the business?" answerable.
Deliverable
A sheet-as-system map: every area of the sheet, who relies on it, where it breaks, and the tribal rules behind it.