SKU or Stock Keeping Unit is a unique code for all your products consisting of numbers and letters. This can be a machine-readable bar code or a code that is easily readable by everyone that helps sellers identify & track items in their inventory.
There is no fixed way to create an SKU, as long as it is easily identified and understandable by everyone who handles your products.
At noon, you can use SKU’s to identify your products. Each product and the variants of that product (whether it is a colour or size variant) must have an SKU.