New feature: From now on you can add new products as variants on Cdiscount. You can create variants based on color and/or on size. Just pass in the value "Variant" for the product type field and supply a color and/or size value in the build step.
Important: You can not edit an existing product with our API. If you want to change the content of an already existing product, you need to manually supply this information in a ticket to the Cdiscount support team.