What are lookup numbers used for?

Lookup numbers are primarily used for entering items sold by weight or quantity. They serve as a quick reference that associates specific codes or numbers with products that require precise measurements rather than fixed prices. This system allows for efficient transactions at the point of sale, particularly for items that are not pre-packaged and need to be weighed or counted before pricing can be finalized. This utility enhances the speed and accuracy of sales processes in retail environments like grocery stores.

Identifying each store location, tracking employee hours, and calculating tax on products are all essential operations but do not involve the specific purpose of lookup numbers. Store identifiers typically use different coding schemes, employee hours are recorded through timekeeping systems, and tax calculations are based on product pricing and applicable tax rates, rather than utilizing lookup numbers directly in their processes.