SKU can be simply understood as the attributes of each product: color/size and other information (for example, red M code is a SKU; red L code is another SKU).
SKU=StockKeepingUnit (stocking unit), that is, the unit of inventory measurement, which can be in units of pieces, boxes, pallets, etc. SKU is a necessary method for logistics management of DC (distribution center) of large supermarket chains.
Extended information
For e-commerce, SKU has additional annotations:
1. SKU refers to a product, and each product has one SKU makes it easier for e-commerce brands to identify products.
2. If a product has multiple colors, it has multiple SKUs. For example: if a piece of clothing is available in red, white, and blue, the SKU codes will be different. If they are the same, confusion will occur. Wrong goods shipped.
SKU is defined as the smallest available unit for maintaining inventory control. For example, an SKU in textiles usually represents: specifications, colors, and styles. STOCKKEEPUNIT, this is a method for customers to number and classify the goods after they get the goods and put them in the warehouse.
Usually SKU# is what it is, and some are translated as inventory unit\stock unit\stock unit\cargo storage unit\inventory storage unit\unitized unit\single product\variety. Based on business, there are also: Minimum retail unit\minimum sales unit\minimum management unit\inventory counting unit, etc.; professional logistics terminology is explained as "goods grid".
Reference: Baidu Encyclopedia-SKU