MFG/PRO 9.0 User Guide Volume 3: Manufacturing - QAD.com

FORECASTING/MASTER SCHEDULE PLANNING 233
Example The sale of a specific type of computer, entered in the planning
bill with a structure code of Planning, consumes the computer family
forecast, but the sale of an extended keyboard, an option, does not.
Production Forecasts
When you establish planning bills and forecast and master schedule at the
family-item level, the system automatically calculates the derived demand
for components of the family or upper-level item. These calculations are
based on the ATP quantities for the family-level item and the quantity per
and forecast percentage for the components of that family item. The result
is called a production forecast, since it derives from the master production
schedule and the forecast percentage specified in the planning bill.
Production forecasts are only created for components with structure codes
P and O. Production forecast amounts display in MPS reports and
inquiries and contribute to the total demand that MRP regards as input.
As forecast for the family-level item is consumed, the ATP quantity for
that item changes, resulting in revised calculations for the production
forecast the next time MRP is run.
Forecast (Independent)
Planning-Item Level
Structure Type = P
Production Forecast (Dependent)
Option-Item Level
Structure Type = O
Family-Item Level
Model Model A
20% 20%
Model Model B
30% 30%
Multilevel Scheduling Techniques
Computer
Family Family
Model Model C
50% 50%
Standard
Keyboard
25% 25%
Keyboard
100% 100%
Extended
Keyboard
75% 75%
When using multilevel master scheduling, you can plan family-level
items using either the fully automatic or the computer-assisted technique.
Either way, you must use MRP to plan orders in order to generate
production forecasts for the components of these family items.
Fig. 11.10
Multilevel Master
Scheduling
Example
Ï See “Approaches
to Master
Scheduling” on
page 228.