Default inventory consumption

I am using Samba V4, and the issue I am facing is that Samba is doing default amount of Inventory Consumption. During a WorkPeriod, even If I am not selling any Burgers or Fries, Samba would deduct a certain amount of Buns(Burgers) from the Inventory. 10,700 grams of Fries from Inventory even if not sold a single piece.
Any help would be appreciated.