What is a key requirement of a Just-In-Time system?

A Just-In-Time (JIT) system is fundamentally centered on minimizing inventory levels and achieving efficiency in the production process. A key requirement of JIT is establishing an effective relationship with suppliers. This relationship is crucial because, under a JIT system, manufacturers aim to receive materials precisely when needed in the production process, rather than keeping large stocks on hand. To achieve this seamless integration, suppliers must be reliable in terms of quality, timely deliveries, and flexibility. A strong partnership ensures that the flow of goods is consistent, which is vital for maintaining the lean operations that JIT promotes.

Inventory management is streamlined, avoiding excess that could lead to higher costs and inefficiencies. Reliable supplier relationships also allow for better communication and coordination, essential for responding to changes in demand without incurring the costs associated with carrying surplus inventory. Thus, the effectiveness of a JIT system is significantly enhanced by nurturing these collaborative ties with suppliers, making this the correct answer.