What is unfulfillable inventory and how does it happen?
Unfulfillable inventory is created when Amazon’s warehouse staff or automated systems determine that a unit cannot be sold in its current condition. The most common causes are: warehouse damage (Amazon’s equipment or handling damages the product), customer return damage (a returned unit fails inspection), expiration (the product passes its sell-by date), and defective classification (the product fails an Amazon quality check).
When units become unfulfillable, Amazon moves them to a separate inventory pool. They still appear in your total inventory count but are excluded from your available/sellable quantity. Critically, unfulfillable units continue to incur monthly storage fees at the same rate as sellable inventory. If you do not create a removal order within 30 days, Amazon may automatically remove and dispose of the units and charge you the disposal fee.
For damage caused by Amazon (warehouse damage during handling or FC transfers), you are eligible for reimbursement. Amazon should automatically reimburse you, but in practice, roughly 1% to 3% of eligible reimbursements get missed. This is why sellers use reimbursement audit tools or manually file claims through Seller Support.
Example: unfulfillable inventory cost for a $2.6M seller
A seller doing $2.6M across 32 ASINs runs a monthly audit and finds 186 unfulfillable units across 11 ASINs. Breakdown: 72 units warehouse-damaged (Amazon’s fault, eligible for reimbursement at average ASP $36 = $2,592), 84 units customer-return-damaged (seller’s cost), and 30 units expired (seller’s cost). The 186 unfulfillable units have been sitting for an average of 22 days, accumulating $48 in storage fees so far.
Action plan: (1) File reimbursement claims for the 72 warehouse-damaged units, expected recovery $2,592. (2) Create a removal order for the 84 return-damaged units at $0.97/unit = $81.48, then inspect returned units at a prep center to determine if any can be refurbished and relisted. (3) Dispose of the 30 expired units at $0.32/unit = $9.60. Total removal cost: $91.08. Total recovered via reimbursement claims: $2,592. Net positive: $2,501. Ignoring this audit for another 60 days would have cost $144 in additional storage fees and risked Amazon auto-disposing the warehouse-damaged units before reimbursement claims were filed.
Common mistakes
- Not filing reimbursement claims for warehouse-damaged inventory. Amazon is supposed to auto-reimburse when they damage your product, but 1% to 3% of claims slip through. Audit your unfulfillable report monthly and file manual claims for any warehouse-damaged units that were not reimbursed. The claim window is 18 months.
- Letting unfulfillable units sit and accrue storage fees. Every day unfulfillable inventory stays in FBA costs money with zero chance of generating revenue. Set a weekly cadence to review and act on unfulfillable units. The removal order costs $0.97 per unit; a month of storage can cost more for oversized items.
- Disposing of return-damaged units without inspection. Many customer returns are in sellable condition. Having them shipped to a prep center for inspection costs $0.97 removal + $0.50 inspection per unit. If even 30% of returns are resellable, you recover more than the inspection cost on a $25+ ASP product.