The master production schedule has a planning horizon length that matches the longest cumulative lead-time function in that schedule.

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The master production schedule must cover all the lead times required to manufacture and deliver the finished product, including the time required to acquire raw materials or components from suppliers, manufacture the finished product, and transport it to customers. Therefore, the planning horizon of the master production schedule must be long enough to cover the longest cumulative lead-time function in the schedule. If the planning horizon is too short, the schedule may not account for all the time required to fulfill customer demand, leading to stockouts or delays in delivery.

The Master Production Schedule Has a Planning Horizon Length That