The cumulative internal and external lead time to manufacture shippable product, assuming that there is no inventory on hand, no materials or parts on order, and no prior forecasts existing with suppliers. (An element of Total Supply Chain Response Time) Calculation: The critical path along the following elements: Total Sourcing Lead Time, Manufacturing Order Release to Start Manufacturing, total Manufacture Cycle Time (Make to Order, Engineer to Order, Configure/Package to Order) or Manufacture Cycle Time (Make to Stock) , Complete Manufacture to Ship Time.Note: Determined separately for Make-to-Order, Configure/Package-to-Order, Engineer-to-Order, and Make-to-Stock products.