In our business we will buy goods in the unit of boxes. 1 box will contain 10 packets. I successfully created alternative unit. 1 Box = 10 pkts. Suppose i bought 2 boxes. but i want to sell 3 packets only. How can i get this conversion take place in sales voucher. When i try to enter 3 in the quantity column tally is taking it as box. Please let me know how to do this.