Supplier replenishment lead time

Supplier replenishment lead time here covers a purchase order placed with a supplier through to receipt of the goods for your own inventory. In planning, this supplier interval helps determine a planned receipt date from an order date; Microsoft Business Central, for example, describes order date plus lead time as the planned receipt date.[1] This is a different order flow from fulfilling a customer purchase from your stock.

Define when the purchase order counts as placed, when receipt is recorded and whether the unit is calendar or working days. Compare planned intervals with actual receipts and examine variability: an average can hide occasional much longer replenishment times. That uncertainty matters when assessing reorder levels and inventory protection.