SKU (stock-keeping unit) is a unique identifier that simplifies product and stock management. It can be attached to an item, product version, product line, bundle or service. SKUs are often used to refer to different versions of the same product.
For example, for a T-shirt, SKU 12345-WHT-XL would mean that the WHT is the color and XL the size.
In order to automatically update the products (prices, images and other variables), we recommend using the SKU, because the system will match your catalog products with the ones from the bulk upload file by using the unique identifier assigned to each product.
For more information regarding the SKU, you can visit this page.
Listed in: Catalog settings