Overview

Amazon's Reserved Inventory report provides FBA sellers with a detailed breakdown of inventory units that are currently in a reserved status and temporarily unavailable for new orders. Understanding this report is essential for managing stock levels, forecasting availability, and avoiding overselling or unnecessary replenishment.

Key Points / What Sellers Need to Know

• Reserved inventory is not lost inventory — Units in reserved status are still accounted for in your FBA inventory. They are simply set aside temporarily for specific operational reasons such as pending orders, fulfillment center transfers, or additional processing.
• Reserved units may still be purchasable — If your inventory is being transferred between Amazon fulfillment centers, those units typically remain available for customers to buy even while in transit.
• Reserved quantities are excluded from key inventory metrics — Reserved units are not included in your Available or Inbound quantities, which can make your sellable stock appear lower than your total inventory on hand.
• The inventory math matters — Your total units for any given SKU at a fulfillment center equals the sum of Available quantity, Reserved quantity, Inbound quantity, and Unfulfillable quantity. Knowing this formula helps you reconcile your numbers.
• Reports can be downloaded on demand or scheduled — You can pull the report as a CSV or TXT file at any time, or set up automatic generation on a recurring basis for ongoing monitoring.

What Reserved Status Actually Means

When Amazon marks inventory units as reserved, it means those units have been temporarily set aside and are not counted as part of your available sellable stock. There are several reasons why units enter reserved status. The most common is that a customer has placed an order and the units are in the process of being picked, packed, and shipped. Another frequent reason is that Amazon is transferring inventory between fulfillment centers to optimize delivery speed across its network. In some cases, units may be reserved because they require additional processing at the fulfillment center, such as labeling, inspection, or repackaging. While reserved units are not reflected in your available inventory count, they have not been removed from your account and will typically return to available status once the underlying process is complete.