Additional product information can help increase the accuracy of the inventory forecast.
Dropshipped or Discontinued Items
To remove items from your forecast that you do not keep in stock (including dropshipped or discontinued items), go to the Replenishment report and select items you wish to remove.
Then 'Set As Non-Replenishable'
The default view of your Replenishment report shows replenishable items. If you wish to view items that are non-replenishable, remove the Replenishable filter.