A warehouse can be measured a hundred ways. Five numbers usually carry every decision worth making.
Stock accuracy
The share of SKUs where the shelf and the system agree. Below 98 percent, every other number is a guess.
On-time orders
Not how fast, but how often the promise held.
Pick accuracy
One wrong item costs two shipments and one customer.
Age of returns
How many days a returned item sits before it is sellable stock again.
Space utilisation
A warehouse at 95 percent sounds efficient until an inbound shipment has nowhere to go.
A number that has never changed what anyone did that day is decoration, not a metric.