The Inventory Amazon Fulfills page provides a view of your FBA inventory. In addition to the SKU, product name, condition, and price, you can find the following information:
Inbound displays the quantity of that product in assigned to shipping plans, in transit to fulfillment centers, or being processed at the fulfillment center.
Available displays the quantity of that product available to ship to customers.
Unfulfillable displays the quantity of that product that is currently in fulfillment centers, but not in a condition that can be sold.
Reserved displays that quantity of that product that is:
Being processed at the fulfillment center
Is associated with a pending customer order
Is being shipped to another fulfillment center
Fee Preview displays the estimated fees for the product once it is sold.
Unit Volume displays the volume of the product as it relates to FBA storage fees.
For more information on managing your listings, see Update your listings from the Manage Inventory page.