In case the product does not have any attributes (e.g. size, type, color), the SKU or Stock Keeping Unit value should be defined within the “SKU” input field.
Figure 212: Defining the SKU value for a product without attributes
In case the product has attributes, you should select the “Attribute Inventory Control” checkbox and define the attributes.
Figure 213: Defining SKU values for products with attributes
The SKU value for products with attributes should be defined within the SKU field at the bottom of the screen. Each product with attributes should have it’s own SKU value.