Seller SKU on Amazon

What is the seller SKU on Amazon? It’s just an identification number assigned by the supplier to identify a product or one of its versions.

What does Amazon do with the Seller SKU (stock keeping unit)? Well, it uses it for cataloging certain product/category on Amazon.

Why is it useful? How does Amazon use the seller SKU? Amazon uses it to identify a product, its quantity and other important information like color, size etc.

It’s not only useful for Amazon but also for suppliers who can easily monitor their inventory in retail channels with this system.

Small companies frequently choose to sell on Amazon seller central because it provides a comprehensive ecommerce and supply chain management solution.

While Amazon offers end-to-end solutions for its merchants, new businesses may find themselves lost in a sea of jargon and lingo. Confusing acronyms include:

  • Stock Keeping Unit (SKU)
  • Amazon Standard Identification Number (ASIN)
  • European Article Number (EAN)

We’ll answer all of your questions in this post.

What is a seller SKU on Amazon?

SKUs are used in warehouses to keep track of items.

SKUs stand for specific alpha-numeric codes assigned to each of your products and variants, and they’re commonly found in warehousing systems.

A SKU can be made up of any combination of letters and numbers you like as long as the system is consistent across all of your inventory items.

Alan Chen

Free 30-Min Strategy Session

By the end of this Strategy Session, you will have a clear understanding of the next steps you can take for your business to take advantage of the tax deductions you are missing out on.

A SKU for Amazon sellers has the same restrictions. However, each SKU may only be up to 40 characters long.

All goods available on Amazon must have SKUs that you can generate or have Amazon generate for you. Sellers should use Amazon SKUs to keep track of their products.

Note: The code for a product is not the same as its SKU. The term “stock keeping unit” refers to the identifying number that identifies each one of something. Products are assigned an eight-digit UPC or a thirteen-digit EAN, which serves as their unique identification number throughout the world.

Further reading:

What should you include in an Amazon SKU?

In most cases, all SKUs should include information that aids in the purchasing process:

  • Categorize items by color, size, and type.
  • Products may be picked, packed, and sent from the warehouse quickly.
  • Inventory that is being sold across multiple channels must be tracked.

When creating your Amazon SKUs, keep in mind to include any product identifiers that may help consumers locate you on the site.

Consider including the following items:

  • Product identifier.
  • Model/style identifier.
  • Color identifier.

Tip: Amazon sellar SKUs will be the most prevalent SKUs your company will handle for items, it may also be helpful to add an identifier for where the product is being sold. It’s a good idea to include such an indication in this scenario, such as “AM”. And all future new items should use the same SKU format.

Further reading:

Examples of Amazon SKUs

Merchant-generated SKUs are different from Amazon SKUs depending on the business’s internal standards. What these rules look like is dependent on what you’re selling.

Here are some examples of Amazon SKUs and how they function.

SKUs Based on Product’s Title

Take the first letter of each component in the title and turn it into your Amazon SKU number, for example, if your product is called Cisco 3560-CX Switch. The SKU in this situation will be C3S.

SKU Based on a Product’s Attributes

For example, if your product is called Catalyst PON 4-Port PoE Voice-Activated, the Amazon SKU number will be changed to P-4P-P-VA.

SKU Arranged Based On The Importance Of Variables

For example, a product named “Premium Boar Bristle Beard Brush – Real Wooden Handle” might have an SKU like PR-BB-BB-RWH.

This SKU organizes the product’s most important features in order of their significance. The fundamental components appear first in the SKU section. The rest are towards the end of the description.

What is an Amazon ASIN?

Amazon creates and attaches an ASIN number to every physical item in its catalog. That isn’t the seller sku, though.

An Amazon Stock Identifier Number (ASIN) is a 10-digit number assigned to every Amazon product. It’s a unique identifying number that allows them to track all the items they sell on Amazon. Think about how many things there are.

ASIN Amazon

Because Amazon assigns the Amazon ASIN to all physical items, you won’t have to worry about that number. However, for each item you send into the Amazon warehouse, you must create and manage your seller SKU or MSKU.

What is an Amazon MSKU?

The Merchant Stock Keeping Unit, or MSKU, is a term used to describe the Amazon seller SKU.

It’s the fancy and swanky number you use to label a product for sale on Amazon.

For example, consider the following MSKU:


It’s just a collection of numbers and letters to the customer, but it holds a wealth of knowledge for you as a seller.

It’s also important to note that the SKU and MSKU are not the same thing. The SKU is an identifier used in a warehouse or retail setting, while the MSKU is what you use on Amazon.

Further reading:

What is an Amazon FNSKU?

The MSKU and FNSKU sometimes get confused. If you operate an Amazon FBA business, both identifiers will be associated with your goods.

That’s because an MSKU distinguishes your product in terms of everything else selling the same thing inside Amazon’s fulfillment centers, whereas a FNSKU distinguishes yours from all of the other sellers.

Here’s an example of a FNSKU label that would be placed on a product and sent to Amazon’s facility:

FNSKU Amazon

Why you should manage your Amazon seller SKU carefully?

If you submit a popular book to Amazon for resale, other vendors are sure to submit it as well. As a result, in order to properly distinguish your work from the many other seller’s titles in the warehouse, you’ll need your own seller sku or FNSKU.

This is not only for maintaining accurate inventory, but it’s also how Amazon knows they’ve sold your book and not your competition’s.

How to make your seller SKU on Amazon

There are five different methods to acquire your own Amazon seller SKU:

  1. Source Identifier: It’s critical to keep track of where your items originate. If you notice things flying out the door from Craigslist (CL) and all of your purchases from Walmart (WM) are accumulating, where will you most likely seek for more supplies?
  2. Product Identifier: The cover photo of a book, for example, may resemble the front of a CD and vice versa. If you have a lot of CD descriptors in your item sales, you’ll know immediately without seeing the picture that you’re selling a lot of CDs and it’s time to get some more.
  3. Date Identifier: We believe that one of the most crucial ways to personalize your Amazon seller SKU is through product timing. If you see a lot of goods selling on April 1st that were sent in November, then there are certain patterns to be seen either with the item itself or with the sale’s date.
  4. Condition Identifier: This is also critical since the velocity of sales compared to the product’s condition is crucial for future sourcing trips. Are new items selling better than used? Perhaps it’s time to source differently and stock up on NEW stuff instead of other conditions.
  5. Cost Identifier: This is not essential to your business since you already know how much you paid for the item when you sourced it, but it may put a grin on our face every time you sell a CD for $10 or more and your SKU claims that you purchased it for $50.

Further reading:


What is seller SKU on Amazon?

a Stock Keeping Unit (SKU) is a stockkeeping code used to keep track of products for inventory purposes. It sometimes contains information about the product, such as color, size, and fit.

Where can I find my seller SKU on Amazon?

Go to the Shipping Queue, click the Track shipment button to the right of your order, and then select View shipments from the drop-down menu. To view more information about a particular shipment, go to the Download SKU list page.

Is it necessary to have a SKU in order to sell on Amazon?

Amazon SKUs are important for several reasons, including allowing products to be categorized easily and monitoring inventory levels.

SKUs are not optional. Amazon requires that all items sold on its website have an Amazon SKU number. According to Amazon’s policies, a seller may only use 40 characters in an Amazon SKU name.

Why are SKUs important?

To determine how many of a certain product are available, track inventory. Assessing which goods are the most profitable (through analysis) and suggesting reorder points for them. Saving time for consumers by allowing them to locate items quickly.

How do you organize SKUs?

  • Make sure it’s simple to understand.
  • Letters that may appear to be special characters should not be used.
  • Determine how you want to arrange your words and then prioritize them based on their importance.
  • Avoid using manufacturer numbers.
  • We recommend avoiding beginning SKU names with zero.

If you find it too time-consuming, schedule a free consultation with Alan chen (a CPA who has over 20 years of experience working with ecommerce firms).

Free E-book for E-Commerce Entrepreneurs

9 Most Crucial eCOM Tax Deducations The IRS Doesn’t Want You to Know

Explore More

Boost Your E-Commerce Business Now

drop us a line and keep in touch

Take Less Than 60 Seconds To Share What You Love

Alan Chen

Schedule Your Call with Alan!

Hate working with accountants that don’t understand your online business?

By the end of this Strategy Session, you will have a clear understanding of the next steps you can take.

 This Call Is Completely FREE.

Have Urgent Questions You Need Answered?

Book a FREE consultation call with Alan and talk to a CPA who actually understands and cares for your business.

Alan Chen