You buy item 'X’ from three different suppliers. Supplier ‘A’ sells individual products, supplier ‘B’ sells products in packs of 50 units and individual products, supplier ‘C’ sells products in packs of 100 units. Therefore, when you add a product, you need to add 4 types of packages with the following quantity: 1 (one) for supplier ‘A’, 1 (one), and 50 for supplier ‘B’ , and 100 for supplier ‘C’.