Haynes 8: Co. Pty Ltd (H&C) is a large event-planning company based in Melbourne, Australia. H&C provides event-planning services for corporate events (e.g., product launches). H8C is known for having good supplier relationships. The company always received discounts for prompt payment. Goods supplied are generally of suitable quality; however, with the nature of the business, H&C often liaises with different suppliers to source event-related items (e.g., goodie bags) to meet client specications. H&C's Purchase Manager is responsible for processing these Purchase Orders. Most suppliers have a 30-day payment term (the same payment term H&C provides to clients); however, some suppliers offer a 2% discount within 7 days. Over the last two years, H&C experienced signicant growth, and as a result of this, the company had an increased number of events occurring on the same day. However, due to this, there were a few incidents of mix-ups with goodie bags, with the most serious case being a mix-up of goodie bags for the product launches of two competing companies. To mitigate this issue, H&C has made the decision to deliver low-value (