scheduling, material requirements planning, and some form of production activity control and
vendor order management
Sales and operations planning Establishes overall production,
workforce, and inventory levels (tactical
(S&OP) capacity planning)
Figure 1:
Top-Down Model of Determines what specific products will
Manufacturing Planning be made, when specific customer orders
Master scheduling will be filled, and what products /
and Control Systems capabilities are still available to meet
new demand
Material requirements Calculates the timing / quantities of
material orders needed to support the
planning (MRP) master schedule
Productivity activity control Vendor oder management
(PAC)
Assures that in-house manufacturing Assures that materials ordered from s.c.
takes places according to plan; helps partners are received when needed;
manufacturing managers identify also helps purchasing managers to
potential problems and take corrective identify potential problems and take
actions corrective actions
12.1 Master Scheduling
- master scheduling: a detailed planning process that tracks production output and matches this output
to actual customer orders
- management has established overall targets for demand, production, and ending inventory; these
targets will guide the firm's tactical decisions
- as long as the numbers in the S&OP plan are close to those in the master schedule, firms will be able to
manage the differences
The Master Schedule Record
- firms tailor the master schedule record to their manufacturing environment / the characteristics of their
product (generalizing about its precise form is difficult); nevertheless, most master schedule records
track several key pieces of information:
i) forecasted demand,
ii) booked orders,
iii) projected inventory levels,
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