No SKU. It shouldn’t even have an inset, the editor needs to throw an error.
One SKU, no discount, finite inventory, in stock, one available shipping country
Two SKUs, same currency, discounted by $x, bucket inventory, one of them is out of stock, two available shipping countries
Two SKUs, different currency, discounted by x%, infinite, rounding price (10.05 50%), no shipping country set (should default to US only)
Two SKUS from 2 different attributes, no discount, bucket inventory, out of stock
One sku, no discount, finite inventory, out of stock
Find these products at the stripe dashboard with Levi’s account