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Forecast scheduling
Microsoft Dynamics AX uses the setup parameters and the data that are defined in the selected forecast plan to calculate gross requirements and generate planned orders. You can use this information for long-term planning of materials and capacity. You can use several forecast plans and compare and evaluate the results of different parameter setups.
• Master scheduling
Microsoft Dynamics AX uses the setup parameters and the data that are defined in the selected forecast plan to calculate forecast requirements. This, in turn, becomes input for calculating net requirements.
Судя по тексту (..and the data that are defined in the selected forecast plan to calculate..) - для учета прогноза продаж в сводном плане прогнозный план должен быть рассчитан..