Trace how supply is created to answer demand: buying from a vendor, making an item, or moving it from another location. You’ll recognize that replenishment is not just “more stock,” but a planned incoming quantity with a source, date, and purpose.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Compare the quantity physically in the warehouse with the quantity you can safely promise. You’ll reason through why on-hand stock may already be claimed by existing orders, reservations, or other demand, making available stock the more useful replenishment number.

Use what you learned in the previous lesson to solve real-world problems.

Work through lead time as the delay between deciding to replenish and having usable stock on the shelf. You’ll see why an item ordered too late can stock out even when the purchase process works perfectly.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Use safety stock as a buffer for late vendors, uneven demand, damaged goods, or counting mistakes. You’ll judge when safety stock protects service and when it simply hides process problems by tying up extra cash.

Use what you learned in the previous lesson to solve real-world problems.

Follow what happens when customer demand arrives but usable stock is not available. You’ll distinguish a backorder from lost demand and see how backorders affect customer service, urgency, and the next replenishment decision.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Build the logic of a reorder point from demand during lead time plus a safety buffer. You’ll recognize the moment NAV should suggest replenishment: not when the shelf is empty, but when stock has fallen far enough that waiting would create risk.

Use what you learned in the previous lesson to solve real-world problems.

Compare replenishment setups that order too little, too late, too much, or too often. You’ll connect common NAV item setup choices—lead time, safety stock, reorder point, and order quantity—to either empty shelves or inventory cash trapped in slow-moving stock.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Trace the everyday flow from demand signal to supply order to received stock. You’ll see how the same item can move from “needed,” to “on order,” to “on hand,” to “available,” and why each status answers a different replenishment question.

Use what you learned in the previous lesson to solve real-world problems.

Check what you understood with a short quiz.

Review this chapter with practice based on your mistakes.