Luke delivered a shipment of light bulbs to Lando. Lando didn't yet pay for them, but promised that payment would be made shortly. Unfortunately, Lando was deeply in debt and was forced into Bankruptcy by several of his creditors. Obviously, Luke doesn't want to lose money on the deal and goes to his Lawyer (Leia) for advice. She says that an unpaid supplier of goods who is an unsecured creditor , but can identify the goods supplied out of the inventory of a commercial bankrupt is entitled to reclaim the goods if the supply was made