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Understanding ASIN, SKU, and GTIN: Common Amazon Terms
When selling on Amazon, knowing the difference between ASIN, SKU, and GTIN is crucial. Many new sellers mix these terms up, but each serves a specific purpose in tracking, listing, and managing products. Correctly understanding these identifiers can help you avoid listing mistakes, streamline inventory management, and improve sales tracking.
What Is an ASIN?
An ASIN (Amazon Standard Identification Number) is a unique identifier assigned by Amazon for each product in its catalog. Every item sold on Amazon has its own ASIN, which helps Amazon track product listings, manage inventory, and link reviews and sales data. Sellers use ASINs to search products, create listings, and optimize listings for better visibility.
What Is a SKU?
A SKU (Stock Keeping Unit) is a unique code created by the seller to track inventory internally. Unlike ASINs, SKUs are customizable and help sellers manage stock, monitor sales, and differentiate products in their warehouse or online store. For example, adding color, size, or location codes to SKUs can make inventory management easier.
What Is a GTIN?
A GTIN (Global Trade Item Number) is a universal identifier, such as a UPC, EAN, or ISBN, that manufacturers assign to products. GTINs are essential for creating new Amazon listings because they allow Amazon to identify the product in its global database. They also ensure product authenticity and avoid duplicate listings.
Why Knowing the Difference Matters
Mixing up ASIN, SKU, and GTIN can result in errors like duplicate listings, inaccurate inventory counts, or problems with fulfillment. Proper use of these identifiers ensures your listings are accurate, your inventory is managed efficiently, and your products remain discoverable by customers.
Common Mistakes Sellers Make
Many sellers confuse ASIN, SKU, and GTIN, which can cause inventory issues, duplicate listings, or rejected products.
Key Points for Paragraphs:
- Using the same SKU for multiple products.
- Forgetting to add GTIN for new products.
- Mixing up ASINs when analyzing competitors.
Tips for Amazon Sellers
- Always assign a unique SKU for each product variation to prevent inventory confusion.
- Use the correct GTIN when creating a new listing to avoid listing rejection.
- Track your ASINs for performance analysis and competitor research.
- Partner with an Amazon consultant like EHP Consulting Group to streamline product management, listing optimization, and inventory tracking.
Conclusion
Understanding the differences between ASIN, SKU, and GTIN is a foundational step for every Amazon seller. By using each identifier correctly, you can save time, avoid costly mistakes, and focus on growing your business efficiently.
For more tips on how to drive Amazon sales or help selling on Amazon, check out EHP Consulting Group for expert guidance and support.
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Written By: Ahzel P. Miral
Email: [email protected]
Website: http://www.ehpconsultinggroup.com
Number: 925-293-3313
Date Written: November 25, 2025