A fundamental requirement for developing and maintaining good business relationships in an effective supplier partnership is a means of periodic feedback for issue resolution. This means that both parties should communicate regularly and transparently, share information and insights, and address any problems or concerns in a timely and constructive manner12. Feedback is essential for building trust, alignment, and collaboration between suppliers and customers, as well as for improving performance, quality, and innovation34. The other options are not as comprehensive or relevant as the correct answer. While the supplier must commit to meeting the customer’s performance metrics, and the buyer must commit to improving processes, these are not sufficient for developing and maintaining good business relationships. They are more specific aspects of supplier performance management and continuous improvement, which are important but not the only factors for effective supplier partnerships1. Similarly, while both parties should focus on cost reduction to improve competitiveness, this is not the primary or sole objective of a supplier partnership. Cost reduction is one of the potential benefits of a supplier partnership, but it is not the main driver or requirement for forming and sustaining such a relationship2. A supplier partnership should also aim for creating value, enhancing customer satisfaction, and achieving strategic goals34.