A site is an inventory planning and control concept. Inventory control and planning information is maintained by site, including inventory availability, manufacturing methods and costs, sales and purchasing data, manufacturing plans and orders, and forecasts. Each site should be associated with a physical address. However, each physical address can have several sites.

For example, you can set up separate sites for manufacturing, finished goods inventory, and field service in one physical location. There are no limitations on how many sites you have under one entity. Each site belongs to one—and only one—entity, but each entity can have more than one site. A site can be, for example, a distribution center, a warehouse, a manufacturing plant, or a combination of these.

Site Maintenance defines several attributes that default into inventory locations including a default inventory status code, whether or not automatic locations are allowed, and a transfer variance account.

Most planning and control functions work within one site. The system expects to find all the components for a manufacturing order at the same site (with a few exceptions); MRP and DRP calculate requirements one site at a time.

A few functions deal with multiple sites, such as multisite purchase or sales orders, distribution orders, and distributed inventory inquiries.