What is an LPN number on Amazon?

An LPN, or license plate number, is a unique serial number Amazon assigns to identify a specific unit as it moves through fulfillment. Sellers usually see it on returned items and in returns reports, where it links the physical unit to the original order and return reason.

How do I find the order for an LPN?

Download the FBA customer returns report in Seller Central for a date range covering the return, then search the license plate number column for the LPN. The matching row shows the order ID, return reason, disposition and return date for that unit.

Is an LPN the same as an FNSKU?

No. An FNSKU is your seller-specific barcode for all your FBA units of one product. An LPN identifies a single physical unit, usually during returns or other handling. One FNSKU can cover thousands of units, while each LPN refers to just one.

Why does my LPN not show in the returns report?

Check that your date range covers the return and that the unit was an FBA return, not a removal or a different seller's item. Sellers report that some LPNs return no results. If you cannot match it, photograph the unit and sticker and open a case with Seller Support.

Should I remove the LPN sticker before reselling?

Log the LPN and photograph the unit first, because you may need it as evidence. Before sending a sellable unit back to FBA, make sure the only scannable barcode is the correct FNSKU or manufacturer barcode, covering or removing old labels so the unit is received correctly.

Amazon LPN Number: What It Is and How to Look One Up

What changed: License plate number, a unique ID for one physical unit
When: Updated October 2026
Who it affects: FBA sellers handling returns, removals and claims
What to do: Match LPNs to the FBA customer returns report before filing claims

Key takeaways

An LPN identifies one physical unit; an FNSKU identifies your offer; an ASIN identifies the product.
Look up LPNs in the FBA customer returns report to find the order and return reason.
Photograph units and keep LPN stickers until claims are settled.

Amazon identifiers compared

	Identifies	Who sets it	Where you see it
UPC or EAN	A product	Manufacturer	Product packaging
ASIN	A detail page	Amazon	Listing and reports
FNSKU	Your FBA offer	Amazon for you	Unit labels
LPN	One physical unit	Amazon	Returns and removals

What does LPN mean on Amazon?

LPN stands for license plate number. Amazon describes it as a unique serial number that identifies specific items throughout the fulfillment process. Where an ASIN identifies a product and an FNSKU identifies your offer of that product, an LPN identifies one individual unit.

You will usually meet an LPN as a sticker on a returned item, often placed over the original label, or as a column in a returns or removal report. That sticker is the bridge between the box on your desk and the record in Seller Central.

LPN versus FNSKU, ASIN and UPC

Sellers often mix these identifiers up. Each one works at a different level, and claims go faster when you quote the right one. See what an ASIN is for the product-level identifier.

UPC or EAN: the manufacturer barcode for a product
ASIN: Amazon's product identifier for a detail page
FNSKU: your seller-specific barcode for FBA units of that ASIN
LPN: one physical unit as it moves through returns and handling

Where do LPN numbers appear?

LPNs show up wherever Amazon needs to track a single unit rather than a product. For most sellers that means three places.

Customer returns: the LPN links the returned unit to the original order and return reason
Removal orders: units shipped back to you can carry LPN stickers
Reimbursement evidence: Amazon asks for LPNs on some removal claims

How to look up an Amazon LPN number, step by step

The main lookup tool is the FBA customer returns report. Menu names change from time to time, so search Reports in Seller Central if the path looks different.

Open Seller Central and go to Reports, then Fulfillment
Find the FBA customer returns report under customer concessions
Choose a date range that covers the return and download it
Search the license plate number column for the LPN on the sticker
Read the order ID, return reason, disposition and date
Compare the disposition with the item's actual condition

Look up an LPN

1Open Reports
Fulfillment section
2FBA customer returns
Pick the date range
3Search LPN
License plate column
4Read the row
Order, reason, disposition

What to do when an LPN does not match

Sometimes the item in your hands does not match the record. The product might be a different item, an empty box or a unit graded sellable that is clearly damaged. Sellers also report that some LPNs return no results in the report. In each case, photograph the unit, the LPN sticker and the packaging before you do anything else.

If a customer returned the wrong item, or a sellable grade was clearly wrong, those photos and the LPN become your evidence for a claim. Our guide to the Amazon reimbursement claim process explains how to file.

Using LPNs in reimbursement claims

Amazon's reimbursement policy asks for detail on removal claims, including shipment and tracking information, ASINs or FNSKUs and quantities, LPNs and photos of the units, packaging and box. Grading disputes on removals also need a written explanation and have short time limits after delivery to your address.

Customer return claims work from the order ID, which the LPN helps you find. Because claim windows were shortened in late 2024, check returns weekly instead of saving them for a quarterly cleanup. The FBA reimbursement guide lists the claim types.

Good habits for handling LPN stickers

Small process changes save time when a dispute comes up later.

Do not remove LPN stickers until the unit is logged
Photograph every returned or removed unit on arrival
Log LPN, order ID, condition and decision in one sheet
Re-label with your FNSKU before sending sellable units back
Flag repeated return reasons to fix the listing

LPN handling habits

Keep stickers until logged
Photograph on arrival
Log LPN and order ID
Re-label sellable units
Flag repeat return reasons

Why LPNs matter more after the commingling change

Since March 31, 2026, Amazon no longer commingles new inbound inventory, and returns and removals come from your own units rather than a shared pool. That makes the LPN on a returned unit more meaningful: the item should be one you sent in, so a wrong or counterfeit item coming back is easier to dispute. Read the Amazon commingled inventory guide for the full change.

How LPN data improves your listings

Return reasons tied to LPNs tell you why customers send products back. If the same reason repeats, such as wrong size or not as described, the fix is usually in the listing: clearer images, a size chart or better bullets. Our guide to Amazon return reasons shows how to read them.

PPC Spider's FBA inventory and reimbursements service reviews returns and removals monthly and files claims with LPN evidence. The free Amazon audit includes a check of recent returns.

Sources

Amazon Seller Forums: What is an LPN (sellercentral.amazon.com/seller-forums/discussions/t/5d5e61e3-2a21-46d4-b009-63dfb19874e5)
Hopted: FBA inventory reimbursement policy help article (hopted.com/integrations/amazon-sp-api/amazon-help-articles/fba-inventory-reimbursement-policy)
SellerLogic: Amazon FBA inventory reimbursement guidelines (sellerlogic.com/en/blog/amazon-fba-inventory-reimbursement/)

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