Various embodiments are directed to a method for fulfilling orders from an inventory comprising serialized products. For example, a computer system may receive an order and derive from the order a plurality of products, a unit quantity for each of the plurality of products, and a serial identifier referencing a first product unit of at least one of the plurality of products. At least one of the plurality of products may be a non-reserved product. Also, the computer system may determine a first bin selected from a plurality of non-reserved product bins that is associated with product units of the non-reserved product and generate a pick instruction specifying the first bin and the unit quantity of the non-reserved product specified by the order. The computer system may also instruct a robot to retrieve the first product unit from one of the plurality of robot accessible bins. The robot may be programmed to load product units to the plurality of robot-accessible bins and retrieve product units from the plurality of robot-acccessible bins.