You shipped 500 units. Amazon received 488. Nobody emailed you about the other 12 — they just never existed as sellable inventory. This is the lost inbound shipment problem, and if you've never worked through an amazon lost inbound shipment reimbursement claim, there's a very good chance you've been quietly donating units to the supply chain for years. This guide shows you exactly where those units go missing, how to find the shortages in Seller Central, and how to get paid for them.
- "Shipped" and "received" are different numbers. Carrier handoffs, split shipments, and FC receiving errors mean a few units per large shipment routinely vanish.
- CLOSED does not mean resolved. Amazon closes shipments with discrepancies still open — the shortage just stops being visible unless you go look at the Reconcile tab.
- You have roughly 60 days once a shipment becomes eligible for investigation. Before October 23, 2024 it was 18 months. Monthly reconciliation is now mandatory.
- Documentation wins claims: supplier invoice dated before the shipment, quantities covering what you sent, plus a packing list and signed proof of delivery.
- Since March 10, 2025 (US), lost inbound units are reimbursed at manufacturing cost — so upload your real costs if Amazon's estimate is low.
Why "shipped" almost never equals "received"
Every inbound shipment passes through a chain of handoffs, and every handoff is a chance for units to disappear. Your 3PL or supplier counts cartons onto a truck. The carrier consolidates and cross-docks. Amazon's partnered carrier program may split your single shipment plan into multiple shipments headed to different fulfillment centers. Then, at the dock, an associate scans your cartons — sometimes carton-level, sometimes unit-level — into a receiving system that was built for speed, not forensic accuracy.
Losses cluster in three places:
- Carrier handoffs. A carton falls off a pallet at a cross-dock, gets mislabeled, or rides to the wrong facility. Small parcel shipments with many boxes are especially prone to one box simply not arriving.
- Split shipments. When Amazon divides your plan across three FCs, you now have three receiving events, three sets of scans, and three chances for a partial receive. Discrepancies on split shipments are easy to miss because each piece looks "mostly fine."
- Receiving errors. Units get scanned under the wrong FNSKU, counted short, or set aside as "problem receive" and never counted at all. The units may physically be in the building — they're just not in your inventory.
Here's the part that catches most sellers: after a receiving and reconciliation period, Amazon marks the shipment CLOSED whether or not the discrepancy was resolved. CLOSED is a workflow status, not a verdict. A shipment can close with 12 units short, no reimbursement issued, and no notification sent. Unless you open the Reconcile tab and compare the numbers yourself, that shortage is invisible — and after the claim window passes, it's permanent.
This is one of the eight leak categories we track, and it behaves differently from warehouse lost and damaged inventory, which happens after your units are received. Inbound losses happen before Amazon has even acknowledged the units exist, which is exactly why the burden of proof sits on you.
How to reconcile your inbound shipments in Seller Central
The whole check takes about 15–20 minutes a month once you have the rhythm. Here's the walkthrough:
Open the Shipping Queue
In Seller Central, go to Inventory → Shipments. Set the date filter wide enough to cover every shipment from the last few months — and include shipments with status CLOSED, not just RECEIVING. Closed shipments are where the buried shortages live.
Open the shipment contents
Click into each shipment and open its contents page. This shows the per-SKU list of what you told Amazon you were sending, along with box counts and quantities.
Go to the Reconcile tab
On the shipment detail page, open the Reconcile tab. This is Amazon's own ledger of the shipment: units shipped, units received, and any discrepancies it has flagged — shortages, overages, and units it claims to have located elsewhere.
Compare shipped vs. received, per SKU
Line by line: does received match shipped for every SKU? Ignore the shipment-level total — a 500-unit shipment can total out fine while one SKU is short 10 and another is over 10 (which usually means a mis-scan, not a wash). Note every SKU where received < shipped and no reimbursement or "located" adjustment explains the gap.
Gather your proof of inventory
Before you file anything, pull the supplier invoice, the packing list, and the proof of delivery for that shipment (details in the next section). Filing without documents is the fastest way to get a claim denied and waste days of your window.
Request an investigation and track it
Where the Reconcile tab shows an actionable discrepancy, submit it for investigation with your documents attached. Log the case ID, the SKUs, the units, and the date. If Amazon responds that the units were "received" without explanation, reply on the same case with your evidence — don't open a duplicate.
If the same SKU keeps coming up short across shipments, the problem is usually upstream — a carton-count error at your prep center or a labeling issue — not random FC loss. Fixing the root cause is worth more than any single claim. And if reimbursements do appear, match each one to a specific discrepancy; unmatched or partial reimbursements are themselves claimable gaps.
The proof of inventory Amazon actually accepts
Inbound claims are won and lost on paperwork. Amazon's position, reasonably enough, is: prove the units existed and prove they arrived. Three documents do that:
- Supplier invoice. The invoice must be dated before the shipment creation date and show quantities that cover the units you shipped. An invoice for 400 units won't support a claim on a 500-unit shipment. Pro-forma invoices and internal purchase orders are weaker than a real commercial invoice.
- Packing list. The document that ties the invoice to this specific shipment — SKUs, quantities, carton counts. If your supplier or prep center generates one per shipment, archive it with the shipment ID in the filename.
- Proof of delivery. For LTL/FTL freight, that's the bill of lading (BOL) with the carrier's signature at pickup and, ideally, delivery confirmation. For small parcel, carrier tracking showing delivered status to the FC. This is the document that closes the loop: the units left your dock and reached Amazon's.
What doesn't work: screenshots of your own spreadsheet, an email from your supplier saying "we sent them," or an invoice dated after the shipment went out. If your current supplier paperwork wouldn't survive this checklist, fix that now — before you need it. Full documentation standards are covered in our plain-English breakdown of the Amazon FBA reimbursement policy.
What a shipment discrepancy is actually worth
Individually, inbound shortages look small: a few units missing from a large shipment. That's precisely why sellers ignore them — and why they compound. A seller sending four shipments a month, each a few units short, is leaking dozens of units a quarter without a single alarming event. Industry audits consistently find FBA sellers lose 1–3% of annual revenue to unclaimed discrepancies across all categories, and inbound shortages are a steady contributor. (Want the full math on your account? See How Much Does Amazon Owe Me?)
One valuation change matters here. Effective March 10, 2025 (US), Amazon reimburses inventory lost before a customer order — which is every inbound loss — at manufacturing cost: your product cost excluding shipping, duties, and handling. Not your sale price. Amazon uses its own "estimated manufacturing cost" unless you upload your actual cost data, and its estimates can run low. Uploading real costs is a one-time chore that raises every future inbound reimbursement.
Illustrative numbers only — your mix will differ — but here's the shape of it for a product that sells at $24.99 with a $7.50 manufacturing cost:
| Scenario (illustrative) | Units short | Reimbursement basis | Recovery |
|---|---|---|---|
| One 500-unit shipment, small shortage | 6 | $7.50 manufacturing cost | $45.00 |
| Split shipment, one FC receives short | 18 | $7.50 manufacturing cost | $135.00 |
| Small-parcel shipment, one carton lost | 36 | $7.50 manufacturing cost | $270.00 |
| A year of unreconciled shipments (4/mo, avg. 4 units short) | ~192 | $7.50 manufacturing cost | ~$1,440 |
| Same year, but claims filed after the window | ~192 | — | $0 |
That last row is the real story. The units were lost either way — the only variable is whether you reconciled in time.
If you haven't given Amazon your actual per-unit manufacturing costs, it will reimburse at its own estimate. For many sellers that estimate is lower than reality. Upload real costs once and every inbound, warehouse-lost, and warehouse-damaged reimbursement going forward is calculated on your numbers instead of Amazon's guess.
Amazon lost inbound shipment reimbursement deadlines: the 60-day trap
Here is where the old playbook actively hurts you. Before October 23, 2024, sellers had 18 months to file manual claims — you could do one big annual audit and sweep up everything. That policy is gone. Under the current rules, inbound shipment claims have roughly a 60-day window once the shipment becomes eligible for investigation — that is, after delivery plus Amazon's receiving and reconciliation period. The exact trigger depends on the shipment's status, so treat "about 60 days once eligible" as your planning number and act early inside it.
Two months. That's the entire lifespan of an amazon lost inbound shipment reimbursement opportunity. A quarterly audit cadence now guarantees you'll miss claims; an annual one guarantees you'll miss almost all of them. We walk through what the shrunken windows cost sellers across every category in The 60-Day Deadline, but the operational takeaway for inbound is simple: reconciliation is a monthly job now. Put it on the calendar next to your fee audit and your returns-not-restocked check.
A shipment that closed with a shortage is a claim with a countdown attached. Once the roughly 60-day investigation window passes, those units are unrecoverable — no appeal, no exception, no case that will reopen it. If you have closed shipments from the last two months that you've never reconciled, check them today, not at month-end. The same countdown logic applies to removal order losses, where some windows open as early as day 15.
Manual vs. automated inbound audits
Can you do all of this by hand? Absolutely — the walkthrough above is exactly that. The honest question is whether you'll do it every single month, per SKU, across every split shipment, forever, with a 60-day expiry on every mistake. Here's the trade-off:
| Manual (DIY) | ClawbackPro (automated) | |
|---|---|---|
| Time cost | 15–20 min/month if disciplined; more with split shipments and many SKUs | ~2 minutes to connect via Amazon's official SP-API; runs continuously after that |
| Detection level | Shipment totals unless you check every SKU line yourself | Unit-level, per SKU, per shipment — offsetting errors don't hide |
| Deadline risk | One missed month = expired claims | Discrepancies flagged as shipments become eligible, inside the window |
| Reimbursement matching | You reconcile Amazon's payments to discrepancies by hand | Every reimbursement matched to its discrepancy; partials and gaps surfaced |
| Case filing | You write, submit, and chase each case | Automated filing, tracking, and escalation — 100% policy-compliant, zero account risk |
| Cost | Your hours | 15% of what's actually recovered, only after Amazon pays. $0 otherwise |
For the full three-way comparison — including what agencies charge (typically 20–25%+) — see DIY vs. Software vs. Agency: The Real Cost of FBA Reimbursement Recovery. Whichever route you pick, pick one that runs monthly. Under current policy, an unreconciled shipment isn't a task you've postponed — it's money on a timer.
Lost inbound shipment FAQ
Can I still claim units missing from a shipment marked CLOSED?
Often, yes. CLOSED means Amazon stopped receiving against the shipment — not that every discrepancy was resolved. If the Reconcile tab shows shipped units that were never received or credited, you can request an investigation, provided you're still inside the claim window (roughly 60 days once the shipment becomes eligible) and you have proof of inventory. Closed-and-forgotten shipments are the single most common place we find unclaimed inbound money.
What documents does Amazon accept as proof of inventory?
Three things: a supplier invoice dated before the shipment creation date with quantities covering the units shipped; a packing list tying that stock to this shipment; and proof of delivery — a signed bill of lading (BOL) for freight, or carrier tracking showing delivery for small parcel. Internal spreadsheets and after-the-fact supplier emails generally don't cut it.
How much will Amazon reimburse per lost inbound unit?
Since March 10, 2025 (US), inventory lost before a customer order — which includes all inbound losses — is reimbursed at manufacturing cost: product cost excluding shipping, duties, and handling. Not the sale price. Amazon uses its own estimated manufacturing cost unless you upload your actual costs, so upload them if Amazon's estimate looks low.
How long do I have to file an amazon lost inbound shipment reimbursement claim?
Roughly 60 days once the shipment becomes eligible for investigation — after delivery plus Amazon's receiving and reconciliation period. The exact trigger depends on the shipment's status. This replaced the old 18-month window on October 23, 2024, which is why monthly reconciliation is now the minimum safe cadence.