Amazon seller glossary

Short definitions of the terms you meet in Seller Central, such as Account Health Rating (AHR), Account Health Assurance (AHA), Plan of Action (POA) and Solution Provider Portal (SPP). Each term has a Spanish equivalent, including the label Seller Central shows when it differs. Amazon renames features, so check the dated sources before relying on a definition.

How to use this glossary

Terms are listed alphabetically. Where a term has related ones, you will find them under "See also". Definitions describe how the term is used in Amazon Seller Central at the date shown on this page.

Missing a term? Send it to us and we will consider adding it.

A

A+ Content

A+ Content is the enhanced product description, with rich text and images, that Brand Registry owners can add to product detail pages. It is one of the brand-only features Amazon lists with Brand Registry.

See also: Brand Registry

Account Health Assurance (AHA)

Account Health Assurance is a free protection for Professional sellers who keep an Account Health Rating of 250 or higher for at least 6 months, with no more than 10 days below, and a valid emergency contact on file. Amazon says it will not deactivate the account if the seller responds within 72 hours and works to resolve the issue.

See also: Account Health Rating (AHR), Seller Challenge, Listing ProtectionRelated guide: Amazon Account Health Rating and Account Health Assurance: how they work in 2026

ASIN

An ASIN (Amazon Standard Identification Number) is the unique code Amazon assigns to each product in its catalog. Sellers use it to find a product detail page, create offers and identify products in notices, and several sellers can offer the same ASIN.

See also: Listing, SKU, Parent-child variation

B

Brand Registry

Brand Registry is Amazon's free program for owners of an active registered trademark. It gives access to brand protection tools and brand-only features such as A+ Content, Sponsored Brands, Stores, Brand Analytics and Vine. Roles inside it, such as Brand Representative, control who can act.

See also: Brand Representative, A+ Content

Brand Representative

Brand Representative is a role in Amazon Brand Registry. For inventory shipped on or after March 31, 2026, brand owners with this role can use manufacturer barcodes without Amazon stickers, while resellers must apply Amazon barcode stickers even when a manufacturer barcode exists.

See also: Brand Registry, Commingling, FNSKU

Buy Box (Featured Offer)

Amazon now calls the Buy Box the Featured Offer: the offer a shopper buys with Add to Cart or Buy Now. Amazon picks it from competing offers using factors such as a competitive price and free shipping. Many sellers still say "Buy Box".

See also: Listing, ASIN

C

cGMP (dietary supplements)

The FDA's current good manufacturing practice rule for dietary supplements is 21 CFR Part 111. It covers anyone who manufactures, packages, labels or holds supplements, including supplements imported into the US.

See also: TIC organization (testing, inspection and certification)

Children's Product Certificate (CPC)

A Children's Product Certificate is required for children's products, meaning products designed for ages 12 and under. It must rest on testing by a CPSC-accepted third-party lab. The manufacturer or importer issues the certificate, not the lab. Amazon can ask sellers for it.

See also: General Certificate of Conformity (GCC), CPSC eFiling, CPSC-accepted laboratory

Commingling

Commingling was Amazon fulfilling orders with exact product matches from the closest inventory, even if it belonged to a different seller. For inventory shipped on or after March 31, 2026, Amazon ended it. Brand Representatives can use manufacturer barcodes; resellers must use Amazon barcode stickers.

See also: FNSKU, Brand Representative

CPSC-accepted laboratory

A CPSC-accepted laboratory is a third-party testing lab the Consumer Product Safety Commission has accepted to test children's products. A Children's Product Certificate must be based on its test results. CPSC publishes a list of accepted labs, so check the lab's scope covers your product's rules.

See also: Children's Product Certificate (CPC)

D

Days of supply

Days of supply estimates how long current stock will last at recent sales speed. A simple version is units on hand divided by average daily units sold. Amazon uses historical days of supply, over 30-day and 90-day windows, to decide whether the low-inventory-level fee applies.

See also: Low-inventory-level fee, Inventory Performance Index (IPI)

F

FBA capacity limit

An FBA capacity limit is the monthly cap on how much inventory a seller can send to and store at Amazon, measured in cubic feet. Sellers see it in the Capacity Monitor. Amazon says IPI, sales forecasts, shipment lead time and fulfillment center capacity influence it.

See also: Inventory Performance Index (IPI), Storage fee, Low-inventory-level fee

FBA reimbursement

An FBA reimbursement is compensation Amazon pays a seller for inventory it lost or damaged in its fulfillment network, and in some cases for fee errors. Some are paid automatically and others require a claim. Claim windows and values apply, so check the current rules in Seller Central.

See also: Fulfillment by Amazon (FBA), Removal order

FCC ID

An FCC ID identifies a radio-frequency device certified for use in the United States. In July 2026 the FCC adopted an order requiring online marketplaces to display the FCC ID of certified radio devices at the point of sale. Marketplaces must comply from March 1, 2027, or June 1, 2027 when relying on third-party seller certifications.

See also: Hazmat (dangerous goods)

FIFRA (pesticide law)

US law (FIFRA) requires pesticides sold or distributed in the United States, including imports, to be registered by the EPA. A pesticide is any product intended to prevent, destroy, repel or mitigate a pest, so a claim like "kills 99.9% of germs" can make a product a pesticide.

See also: Safety data sheet (SDS), Hazmat (dangerous goods)

FNSKU

An FNSKU is the Amazon identifier on the Amazon barcode label that ties a unit in a fulfillment center to a specific seller's SKU. Labeled units stay traceable to that seller. Since March 31, 2026, resellers must apply Amazon barcode stickers even if a manufacturer barcode exists.

See also: SKU, Commingling, Brand Representative

G

General Certificate of Conformity (GCC)

A General Certificate of Conformity is the certificate the CPSC requires for consumer products that are not children's products but are subject to a CPSC safety rule. The manufacturer or importer issues it, based on testing, and it travels with the shipment. Since July 8, 2026 it is filed electronically.

See also: Children's Product Certificate (CPC), CPSC eFiling

H

Hazmat (dangerous goods)

Dangerous goods, or hazmat, are products that could pose a risk if not stored, shipped or handled properly because of flammable, pressurized, corrosive or otherwise harmful substances. Amazon's dangerous goods team reviews them to decide whether the inventory is safe for FBA, and sellers upload a safety data sheet or exemption sheet.

See also: Safety data sheet (SDS), Fulfillment by Amazon (FBA)Related guide: Amazon product compliance requirements in 2026: what US regulators and Amazon ask for, by category

I

Identity verification

Identity verification is Amazon's check that the person behind a seller account is who the account says. It happens at registration and can also be requested later, including as a live video interview where the account's operator shows identity and business documents. Names across documents should match.

See also: Section 3 (Business Solutions Agreement), Deactivation

Inactive listing

An inactive listing has no buyable offer, so shoppers cannot purchase it. Common causes are required fields missing, a closed offer, or no inventory. Reactivating it usually means completing the missing data, restocking or reopening the offer in Seller Central.

See also: Suppressed listing, Stranded inventory

Inventory Performance Index (IPI)

The Inventory Performance Index is a score from 0 to 1,000 that summarizes how well a seller manages FBA inventory, based on factors such as sales rate and unsellable inventory. Amazon says IPI is one of the factors that influence a seller's capacity limit. Check current thresholds in Seller Central.

See also: FBA capacity limit, Low-inventory-level fee, Stranded inventory

L

Listing

On Amazon, a listing is the product information shown on a product detail page, such as the title, images and attributes. An offer is a seller's price and condition for that product. Amazon's seller glossary treats the two as separate, though many sellers use "listing" for both.

See also: ASIN, SKU, Suppressed listing

Low-inventory-level fee

Amazon charges the low-inventory-level fee when a product's inventory stays below 28 days of supply over both the short-term (30-day) and long-term (90-day) windows. Some products, such as slow sellers, are exempt. Industry reports say it is now calculated per FNSKU; Amazon has not confirmed this publicly.

See also: Days of supply, FBA capacity limit, Inventory Performance Index (IPI)

M

MoCRA (cosmetics law)

Under MoCRA, cosmetic manufacturers and processors must register their facilities with the FDA and renew every two years. A responsible person must list each product and its ingredients, update the listing annually, report serious adverse events within 15 business days, and keep records supporting the product's safety.

See also: Proposition 65 (California), Safety data sheet (SDS)

P

Parent-child variation

A variation family groups related products, such as sizes or colors, under a parent ASIN, while child ASINs carry the actual inventory. Shoppers pick a child on one detail page. A broken relationship or a missing required attribute can suppress child listings.

See also: ASIN, Suppressed listing

Proposition 65 (California)

California's Proposition 65 requires businesses to give a clear warning before knowingly exposing people in California to chemicals the state lists as causing cancer or reproductive harm. Sellers shipping to California may need Prop 65 warnings on products and listings. Check your products against the state's current list.

See also: MoCRA (cosmetics law), Safety data sheet (SDS)Related guide: Amazon product compliance requirements in 2026: what US regulators and Amazon ask for, by category

R

Removal order

A removal order asks Amazon to return inventory from its fulfillment centers to the seller or to dispose of it. Sellers use it for stock they no longer want stored, such as unsellable or aged units. Amazon charges removal fees and has said it will process removals faster.

See also: Stranded inventory, Storage fee

Returns processing fee

Industry sources report that since June 1, 2024 Amazon charges a returns processing fee on products whose return rate exceeds a category threshold, with apparel and shoes excluded and low-volume products exempt. Confirm current rules and categories in Seller Central before relying on this.

See also: Fulfillment fee, FBA reimbursement

S

Section 3 (Business Solutions Agreement)

Section 3 of Amazon's Business Solutions Agreement lets Amazon end the agreement for convenience with 30 days' notice. It also allows immediate suspension or termination in listed cases, such as suspected deceptive, fraudulent or illegal activity, harm to customers or other sellers, or an Account Health Rating below Amazon's thresholds.

See also: Identity verification, Deactivation

Seller Assistant

Seller Assistant is Amazon's AI assistant for sellers. At Accelerate 2026 Amazon described it as monitoring a business continuously and acting on the owner's behalf within limits the owner sets. Amazon says its systems automatically confirmed compliance for more than 8 million products in the past year.

See also: Account Health

SKU

A SKU (stock keeping unit) is the identifier a seller creates for its own product or variation. In Seller Central, each SKU links to an ASIN offer, and for FBA each unit also carries an FNSKU label so Amazon can trace it to that seller.

See also: ASIN, FNSKU

SKU-level profit and loss (P&L)

A SKU-level profit and loss statement shows what each SKU actually earns after Amazon fees, product and landed costs, returns and other costs. It reveals which products lose money even when total sales look healthy. Amazon's own reports usually show sales and fees, not full product-level profit.

See also: Landed cost, Referral fee

Storage fee

The monthly inventory storage fee is what Amazon charges for keeping inventory in its fulfillment centers. It varies with the average daily volume of space the inventory occupies, the product size tier and the time of year. Aged or excess inventory can add further charges.

See also: Fulfillment fee, FBA capacity limit

Stranded inventory

Stranded inventory is stock sitting in Amazon fulfillment centers without an active listing to sell it, for example after a listing is closed or suppressed. Sellers fix it on the Fix Stranded Inventory page, where a stranded reason column explains each case. Changes can take about 24 hours to show.

See also: Suppressed listing, Inactive listing

Suppressed listing

A suppressed listing still exists but Amazon hides it from search and browse because of a data, image or policy problem. The detail page may remain reachable by direct link. Sellers find suppressed items in Manage All Inventory, fix the flagged attributes and save.

See also: Inactive listing, Stranded inventory

T

TIC organization (testing, inspection and certification)

A TIC organization is an independent testing, inspection and certification body. Industry reports say Amazon is phasing in a requirement that dietary supplements sold in its US store show cGMP compliance verified by an Amazon-approved TIC organization. Sellers contacted by Amazon reportedly get 90 days to start.

See also: cGMP (dietary supplements)

U