The 'Stock Code' is a shorter alphanumeric code normally used for stock control and ordering purposes with the distributors and resellers. An example is "V2860VN-K" which is a Vigor 2860Vn router. The 'K' indicates that it is UK stock.    If you already have your product, the E/N and 'Area' printed on label on your box also confirms it (stock codes are not printed on the box).