This error message appears when you've selected SKU combinations that don't exist within the Gooten system. For example, you cannot select "square" and "8x10" together for a canvas wrap, because we don't have 8x10 square canvases.

If you select "Don't show this again," this message will not appear if you go in and edit the product. 

Also, if you want to check out available variants and Gooten SKUs before creating products, you can do that in our catalog, and you can click on the variants to see Gooten SKUs, as shown below: