The catalog stores pricing, inventory, and other information by attaching it to a SKU, or Stock Keeping Unit. A SKU is an alphanumeric code representing a single product variant. A product must have at least one SKU to be purchased.
When a product has only one SKU, the SKU represents the product directly. But when a product has more than one SKU, each SKU represents a unique product variant.
A product must have a different SKU for each of its variants. A product has different variants if it has been assigned options which are SKU contributors (such as color, in the figure above—see Options for details). Giving a SKU to each variant allows the inventory engine to track each variant individually. It also lets you set a unique price for each variant.
Since the product variant a SKU represents is defined by a combination of options, all options should be finalized before creating or editing SKUs.
Creating a SKU
When you create a product, a single SKU called default is created. For products that require only one SKU, the default is all that is needed. To configure it, see the instructions for editing a SKU below.
If a product requires multiple SKUs, then you must add them. Follow these steps:
Go to the catalog, click on a product, and go to the SKUs tab.
Click on the button and select Generate all SKU combinations. This creates a SKU for each combination of option values a product could take. This selection is not available if no SKU-generating options have been applied.
Alternatively, you could create a single SKU by selecting Add SKU, but keep in mind that any product variant without a SKU is not purchasable.
Editing a SKU
When you create a SKU or click → Edit to the right of an existing one, a new column of tabs appears.
The Details tab mirrors the Add SKU form that appears when a single SKU is created. It contains the following fields:
SKU: Enter the SKU.
Global Trade Item Number, Manufacturer Part Number: Enter a trade item number (such as an ISBN) or a part number if applicable. These numbers can be displayed on the product page (see Displaying Product Pages) and used in search results.
Purchasable: Unchecking this box leaves an item visible to customers but purchasable.
Options Select which product variant this SKU refers to. Choose the exact combination of option values that describe the item in question. The field is auto-filled for generated SKUs.
Schedule: Enter a display and expiration date if this SKU should be visible to buyers only for a limited time. To publish immediately and permanently, check both the Published and Never Expire boxes.
The Pricing tab contains three fields:
Price: Set the SKU’s base selling price.
Promo Price: Enter a promotional rate that overrides the base price. See Pricing for more on overriding the base price.
Cost: Enter seller’s costs to help track margins.
Price lists set special prices for certain user segments. To add a SKU to a price list, go to the Price Lists tab:
Click the button and select a price list.
Click the price list you just added, and then enter price in the field that displays. This price is charged only to members of the price list’s user segment.
For more information on creating and using price lists, see Price Lists.
The Inventory tab has one field for each warehouse you have in use (if you use more than one warehouse, see Warehouses). Enter the number in stock at each warehouse. The quantity is adjusted automatically as orders are processed.
A product’s shipping rate may be adjusted based on its weight or dimensions, which are set in Configuration tab → Shipping. To override these dimensions for a single SKU, enter it the SKU’s Shipping Adjustment tab. See Configuration and Shipping Methods for more details.