The Active flag in Item Editor and Product Manager can be set manually to inactive but if you sell, receive, or count the item, it will be set back to Active. This means, if you would like to stop ordering an item (for example, a special-order item), you should set the item to Phase Out instead of Inactive. Unlike the Active flag, there are no automations impacting the Phase Out flag, and when creating Purchase Orders, you can skip ordering Phase Out items.