The 'Display all items in a forecast item group' parameter on the Forecast tab of the parameters enables or disables the display of no forecasts.
If switched on, it will activate the display of all items that have a forecast item group and at least one demand history quantity in any period in the past, the next time Refresh Forecast Maintenance Table is run. This is necessary to determine the forecast customer & sales groups and the product & storage dimensions to display with the item. The item and these attributes will be displayed with blank forecasts on all the forecasting forms.
If switched off, items with no future forecasts will not be displayed at all.