I'm trying to offer nopCommerce as a replacement to a paid platform for a customer to consider. During review, we were asked if there is a sku modifier functionality for a given product attribute. Remembering the ability to add a sku in the product attribute combinations I quickly responded yes, but after trying to use this myself I don't see the product attribute sku being reflected anywhere. I've checked the cart after adding a product, and checked the order items after checking out.
If the sku in the product attribute combinations is not used for this purpose, can someone explain what it is used for and potentially offer another way to accomplish this?