Note: You cannot delete sales forecastsThe best estimate of future requirements. This is used as input to the MPS (Master Production Schedule). Forecast orders received should be subtracted from the forecast to leave a residual forecast in the master schedule. Total demands can then be calculated as orders plus residual forecast for each time period. that are Released or Part Complete.
Open: Planning > Sales Forecasts > Records > Delete Sales Forecast.
The forecasts are deleted.