The site code identifies a specific warehouse or a group of buildings at the same physical location. The site code in the inventory detail record is a basic unit for inventory control and planning.

Sites are assigned to a specific GL entity and domain. Some programs, such as MRP, work vertically within single sites. Others, such as distribution requirements planning (DRP) and consolidated order processing, work horizontally across two or more sites and possibly two or more domains located in the same or different databases.

The system uses sites for inventory records, item costing, purchasing, sales quotations, sales orders, forecasting, master scheduling, MRP, and DRP. Not all programs operate by site. For example, departments and work centers are not site specific.