Job history can be a useful starting point for deciding what belongs on the truck or shelf. It gives you something more concrete than ordering from memory.
Look at repeat use
Review which parts are used often, which shortages cause extra trips and which items sit untouched. Seasonal patterns may be helpful, but last year's work is not a promise of this year's demand.
Keep the records usable
Consistent part numbers and recorded usage matter. A simple minimum-stock reminder may be enough before considering more advanced forecasting.
Balance availability and cash
Supplier lead times, storage, changing equipment and cash tied up in stock all affect the decision. Supplier notices may warn of a confirmed change; software cannot reliably predict every shortage or price rise.
Which missing part causes the most avoidable running around in your business, and would better records help you plan for it?