In floor covering companies materials are sold and purchased in square feet but only in full carton qualities only. Not priced by the carton. Having a quantity per carton (Bundle Round Factor) would allow for the units sold or purchased to be in full carton increments but the Sales UOM and Stock UOM being in S/F. User could elect to round up or down the quantity on a sales order or PO based on the bundle round conversion. For example: one carton of tile is 10.76 square feet (1 sq. meter) per box. Users could only buy in box quantities but the price and quantities sold/purchased are in square feet. if a user wanted to sell/purchase 20 s/f @ $2.00 s/f the system would only allow a choice of 10.76 s/f (1 box) or 21.52 s/f (2 boxes). if the use selects the round up option the line would change to 21.52 s/f @ $2.00 s/f for a $43.04 line total. Sales Orders, Purchase Orders, Inventory counts, pick tickets, etc... would show carton quantities as well so users see both the carton and s/f quantities.