How can i add numbering of items in cart? 1,2,3,4... as much items
And i need to show these numbers in emails and order detail page.
Actually i need some number/code which identifies the order and item, for example i have 4 items in order. So if i get code A4C2B3-3, i will know the order number and which item.
i also thought about adding custom item field which will automatically generate some code after each item is added to cart, but haven't found such field type.
If it can't be done without coding, which versions will be the easiest for programmer?