The FBA Inventory Ledger, Explained: How to Actually Find Money in It

Every unit you send to FBA lives a life inside Amazon's warehouses — it arrives, moves between fulfillment centers, ships to customers, sometimes comes back, and occasionally vanishes. The Inventory Ledger (Seller Central → Reports → Fulfillment → Inventory Ledger) is the account book of that life. If Amazon owes you money for inventory, the evidence is in this report and almost nowhere else.

It's also one of the least-read reports in Seller Central, because the raw export is dense and the important rows hide among hundreds of routine ones. Here's the map.

The event types that matter

Reading Adjustments: where the losses live

A negative Adjustments row means Amazon reduced your inventory without a sale. The disposition and reason columns tell you why: warehouse-damaged stock, misplaced (lost) units, expired goods, or disposals. A positive adjustment usually means a previously lost unit was found and returned to your count.

Three rules govern whether a negative adjustment is money owed:

1. The 30-day grace period.Amazon gives itself time to find misplaced inventory. A unit lost yesterday isn't claimable yet; a unit lost six weeks ago with no matching “found” event or reimbursement is.
2. Net out the founds. If 5 units were lost and 2 were later found, the claimable quantity is 3. Amazon will deny claims that ignore this, and repeated sloppy claims hurt your credibility on later ones.
3. Match against the reimbursement report. Many losses are auto-reimbursed. The claim is only real if no reimbursement row covers those units — and since 2025, even reimbursed losses deserve a second look, because payouts are now based on Amazon's estimate of your cost.

A reconciliation you can do by hand (once)

1. Export the Inventory Ledger (detailed view) for the last 18 months, and the Reimbursements report for the same window.
2. Filter the ledger to Adjustments with negative quantities. Group by SKU.
3. For each SKU: sum the lost/damaged units, subtract found units, subtract units covered by reimbursement rows with a matching reason.
4. Anything left, older than 30 days and younger than the claim window, is a case to file — with the ledger reference IDs as evidence.

Done honestly, this takes an afternoon for a mid-size catalog — and it's stale the day after you finish, which is why most sellers do it once, recover a few hundred pounds or dollars, and never do it again. The units that go missing next month leak away unwatched.

What continuous reconciliation looks like

Clawback runs this exact reconciliation every day: every ledger event against every reimbursement, FIFO-matched by SKU and reason, respecting the grace period and netting out found inventory — then it prices each unclaimed loss at your real unit cost and writes the Seller Central case text with the ledger references already in it. Filing takes about a minute per claim. The first scan is free — it will tell you the total your ledger is owed before you pay anything.