In WholeCell, Product Variations are a combination of:
A SKU is an attribute of a Product Variation. You can assign the same SKU to multiple Product Variations if duplicate SKUs are enabled in your settings.
Adding New Product Variations
A new WholeCell account will have a default catalog of products, but will have zero Product Variations until you add inventory or upload a spreadsheet of product variations with "create" in the ID field of the Product Variations spreadsheet template:
SKUs can be edited in bulk via Product Variation spreadsheet upload or manually from a Product Variation's page.