Companies that would typically use DRP include those in the wholesale or manufacturing sectors which have regional demand fed by one or more supply warehouses or manufacturing plants. DRP provides the drivers that enable the Requirements Planning module to suggest Supply Chain Transfers from one warehouse to another rather than a purchase order on an external supplier or a job on production. Suggestions are based on the closest warehouse in a chain of supplying warehouses, resulting in stock being supplied from oversupplied warehouses to those with a demand.