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Supply Chain Glossary - P

Supply Chain Glossary - P

planning fence also planning time fence

Syn: planning time fence.

The amount of time a plan extends into the future. For a master schedule, this is normally set to cover a minimum of cumulative lead time plus time for lot sizing low-level components and for capacity changes of primary work centers or of key suppliers. For longer term plans the planning horizon must be long enough to permit any needed additions to capacity. See: cumulative lead time, planning time fence.

A point in time denoted in the planning horizon of the master scheduling process that marks a boundary inside of which changes to the schedule may adversely affect component schedules, capacity plans, customer deliveries, and cost. Outside the planning time fence, customer orders may be booked and changes to the master schedule can be made within the constraints of the production plan. Changes inside the planning time fence must be made manually by the master scheduler. Syn: planning fence. See: cumulative lead time, demand time fence, firm planned order, planned order, planning horizon, time fence.


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