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What is an MSKU (Merchant SKU)

Learn what an MSKU is, how it works, and why it’s important for organizing and managing your inventory.

Updated this week

🧭 Overview

An MSKU (Merchant SKU) is a unique identifier created by the seller to track and manage their products.

Unlike ASINs (which are assigned by Amazon), MSKUs are custom and fully controlled by you.


📦 What Does MSKU Do?

The MSKU helps you:

  • Track your inventory

  • Identify specific items

  • Organize listings within your system

  • Differentiate similar products

👉 Think of it as your internal label or product code


🔍 MSKU vs ASIN

Feature

MSKU

ASIN

Created by

Seller

Amazon

Purpose

Internal tracking

Product identification on Amazon

Unique to seller

Yes

No (shared across sellers)

Editable

Yes

No


🧾 Example of an MSKU

You can create MSKUs based on your own system, such as:

  • BOOK-001

  • HP-PRINTER-USED-GOOD

  • SUPPLIER1-0325-001

👉 Many sellers include:

  • Supplier name

  • Date

  • Condition

  • Item number


⚙️ How MSKU is Used in AccelerList

In AccelerList, MSKUs are used to:

  • Track items across batches

  • Manage inventory efficiently

  • Help identify items during listing and fulfillment

You can also:

  • Customize your MSKU format

  • Use templates for consistency


⚠️ Important Notes

  • Each MSKU must be unique per listing

  • Changing an MSKU may affect tracking and inventory syncing

  • Keep your format consistent for easier management


✅ Quick Summary

  • MSKU = your custom product identifier

  • It helps organize and track your inventory

  • You control how it’s created and used

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