Step 1
Pull the reports
Seller Central → Reports → Fulfillment. Export the last 18 months of Inventory Adjustments, Received Inventory, Reimbursements, FBA Customer Returns, and Removal Order Detail reports.
- Filter Inventory Adjustments for reason codes A through Q (Amazon-fault adjustments)
- Cross-reference against the Reimbursements report to find adjustments without a matching credit
- Flag every Shipment ID with a received-quantity variance > 0
- Pull customer return data for orders 60-105 days old, the closing window for return reimbursement claims
Step 2
Build the evidence packet
For each discrepancy, assemble the exact data Seller Support requires. Missing fields are the #1 reason claims are denied on first review.
- Shipment ID and creation date
- FNSKU or ASIN and SKU
- Units shipped vs. units received (or refunded vs. returned)
- Date range of the discrepancy
- Calculated reimbursement amount based on your average per-unit landed cost or sale price (whichever the claim type uses)
Step 3
Open the case
Seller Central → Help → Get Support → Selling on Amazon → Fulfillment by Amazon → Inventory issues. Pick the matching subcategory (lost inbound, lost inventory, damaged, destroyed, customer return, fee overcharge).
- One claim per Shipment ID or per FNSKU, never bundle unrelated SKUs into a single case
- Reference the specific report and date range in the case description
- Attach the inventory adjustment screenshot or report excerpt
- Request a reimbursement amount, don't leave it open-ended
Step 4
Track and reopen
Amazon typically responds in 3-7 days. Roughly a third of first-pass claims get denied with boilerplate, that's not the end, it's the beginning.
- Log every case ID in a tracker with status and dollar amount
- Reopen denied cases with additional evidence within 7 days
- Escalate persistent denials to a Brand Specialist or Account Health rep
- Cite Amazon's own policy language (FBA Lost and Damaged Inventory Reimbursement Policy) when pushing back
Ongoing
Run the audit every 30 days
The single biggest driver of recovery isn't the claim quality, it's never missing a claim window. Build the audit into a monthly close.
- Last business day of each month: pull all reports and reconcile
- Flag any Shipment ID older than 15 months for priority filing (the 18-month window closes fast)
- Track recovery rate by claim type to identify which categories are leaking the most
- Quarterly review of FBA fee charges against current Amazon rate cards