SKU
From Kb_JMY(晉明夷)
JoomEXT:eCommerce: SKU -- Stock Keeping Unit
SKU is a Warehousing item that is unique because of some characteristic (such as brand, size, color, model) and must be stored and accounted for separate from other items. Every SKU is assigned a unique identification number (inventory or stock number) which is often the same as (or is tied to) the item's EAN or UPC.
A stock-keeping unit or SKU (pronounced either as an acronym, /ˈskyuː/, or as an initialism, /ˌɛsˌkeɪˈyuː/) is a unique identifier for each distinct product and service that can be purchased. Usage of the SKU system is rooted in data management, enabling the company to systematically track their inventory or product availability, such as in warehouses and retail outlets. They are often assigned and serialized at the merchant level. Each SKU is attached to an item, variant, product line, bundle, service, fee, or attachment.
SKUs are not always associated with actual physical items, but are more appropriately billable entities. Extended warranties, delivery fees, and installation fees are not physical, but have SKUs because they are billable. All merchants using the SKU method will have their own approach to assigning the SKU system based on regional or national corporate data storage and retrieval strategies. SKU tracking varies from other product tracking methods which are controlled by a wider body of regulations stemming from manufacturers or possibly third-party regulations.
Successful inventory management systems assign a unique SKU for each product and also for its variants, such as different versions or models of product or different bundled packages including a number of related products. This allows merchants to track, for instance, whether blue shirts are selling better than green shirts. Other entity tracking methods, with varying regulations, are Universal Product Code (UPC), European Article Number (EAN), Global Trade Item Number (GTIN) and Australian Product Number (APN).
Example SKU systems
widget (an imaginary product)
An imaginary product, called a widget, has a part number of 1234. It is packed 20 to a box, and the box is marked with the same part number 1234. The box is then placed in the warehouse. The box of widgets is the stock keeping unit (SKU), because it is the stocked item. Even though the part numbers are interchangeable to mean either a widget or a box of widgets, the box of widgets is the stocked unit. There may be three different colors of widgets; each of these colors will be a separate SKU. When the product is shipped, there may be 50 boxes of the blue widgets, 100 boxes of the red widgets, and 70 boxes of the yellow widgets shipped. That would be a shipment of 220 boxes, across three SKUs that may be designated 1234B, 1234R, and 1234Y.
References
- businessdictionary.com -- SKU
- wikipedia.org -- Stock Keeping Unit
- askville.amazon.com -- generate-Stock-Keeping-Unit-SKU
- TechTerms.com -- SKU

