PO balance and purchase-volume reports referenced poi.quantity /
poi.qty_received, which don't exist — the real columns are
quantity_ordered / quantity_received. Price-deviation report pointed
at a view that was never created. HR insurance form2 joined
hr_salary_adjustments through employees.id, but that table links
straight to hr_employee_profiles via employee_profile_id (confirmed
against the model and every other query on that table) — the extra
employees join used a column, employee_id, that was never there.
Found live via BOOT FAILURE pages while capturing screenshots for the
accountant's tutorial PDF.