Amazon FBA Inventory Discrepancy: How to Find and Fix It

Amazon FBA inventory discrepancies happen when the units Amazon reports in your inventory don't match what should actually be there - units that were received, picked up by a carrier, or confirmed delivered but never credited to your account. These discrepancies cost sellers real money, and Amazon won't proactively flag them for you.

## Types of FBA inventory discrepancies

**Lost inventory** - Units confirmed received at a fulfillment center that subsequently disappear from your inventory count without a sale, return, or disposal record. Amazon loses inventory more often than most sellers realize.

**Damaged inventory** - Units damaged by Amazon during storage or fulfillment. Amazon is liable for these but only reimburses when you file a claim.

**Return discrepancies** - Customers receive a refund but the unit is never returned to your inventory, or is returned in unsellable condition without a corresponding reimbursement.

**Inbound shipment discrepancies** - You shipped 100 units to FBA; Amazon received and credited 92. The 8-unit gap needs to be investigated and claimed.

## How to find FBA inventory discrepancies

Go to Seller Central > Reports > Fulfillment > and download the following reports: - **Inventory Reconciliation Report** - shows what Amazon received vs. what's in your current inventory - **Reimbursements Report** - shows what Amazon has already reimbursed automatically - **Returns Report** - shows customer returns and their disposition status

Cross-reference these reports to find units that were received or sold but are missing from inventory without a corresponding reimbursement.

## How to file a reimbursement claim

Go to Seller Central > Help > Contact Us > Selling on Amazon > FBA Issue > FBA inventory reimbursement. Provide the ASIN, FNSKU, shipment ID (for inbound discrepancies), and the specific discrepancy you've identified with supporting data from the reconciliation reports.

Amazon has an 18-month window for most inventory discrepancy claims. Don't wait - file claims as soon as you identify a discrepancy.

## How to prevent recurring discrepancies

The most effective prevention is continuous reconciliation. Rather than auditing inventory quarterly, compare your FBA inventory records against expected counts monthly or weekly. Automated monitoring tools that track inventory signals via the SP-API - like Revnoxa - can flag unexpected inventory count changes as soon as they occur, allowing you to file claims while the trail is fresh and Amazon's investigation is more likely to result in reimbursement.

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