Hi, Is there any way to avoid duplication of product SKU (reference)? The reason is that all my products should have unique sku's For example if I have a "Superb Test Product 1" with reference "stp1" and than I would like to create new product "Superb Test Product 2" which should have unique reference like "stp2". But what if I accidentally set the same SKU? In this case I would like Prestashop not to allow me to save the product, instead I would like to see the error like "warning! dupl
