Project spec "Sold in Qty"
Use the "Pack Size" AspDotNetStorefront field if the "Is A Pack" radio is selected to validate the qty purchased when adding an item to the shopping cart. For example if the pack size is 25 and the user adds 29 items to the shopping cart then 50 items should be added to the cart (2 packs of 25 each) . The amount added should always round up to the next available pack size. Rounding should occur for all variants of the item.