Navigating Amazon's backend systems can be challenging for sellers, particularly when distinguishing between ASINs and SKUs. These seemingly simple codes serve as critical tools for product identification and inventory management on the platform.
Many sellers, especially newcomers, often confuse these two identifiers. While both serve to classify products, their purposes differ significantly. The ASIN functions as Amazon's universal product identifier, while the SKU represents a seller-specific inventory tracking mechanism.
Amazon ASIN: The Universal Product Identifier
The Amazon Standard Identification Number (ASIN) serves as a unique product identifier within Amazon's ecosystem. This alphanumeric code acts as a digital fingerprint for each product listed on the marketplace.
Locating ASINs
Sellers can find ASINs through two primary methods:
- URL inspection: The product detail page's web address typically contains the ASIN following the product name.
- Product information section: The "Additional Information" or "Product Details" section at the bottom of each listing displays the ASIN.
Important considerations include:
- The same product may have different ASINs across Amazon's international marketplaces
- Third-party tools can automate ASIN lookup for large inventories
ASIN Significance
ASINs serve multiple critical functions:
- Enables precise product discovery through Amazon's search algorithms
- Differentiates between similar products with varying specifications
- Provides market intelligence through competitor analysis
Creating New ASINs
For original products, sellers must generate new ASINs by:
- Obtaining Global Trade Item Numbers (GTINs) from manufacturers or through registration
- Submitting product details through Amazon Seller Central
Amazon SKU: The Inventory Management Solution
Stock Keeping Units (SKUs) represent seller-created identifiers for inventory tracking. Unlike ASINs, SKUs are customizable and designed for internal business operations.
Automated vs. Custom SKUs
While Amazon can generate SKUs automatically, seller-created SKUs offer significant advantages:
- Enhanced product identification through customized coding systems
- Improved inventory management efficiency
- Reduced fulfillment errors for complex product catalogs
SKU Creation Best Practices
Effective SKU systems incorporate:
- Alphanumeric combinations for maximum information density
- Key product attributes (manufacturer, color, size, etc.)
- Consistent formatting across all products
- Avoidance of special characters
Integration with Order Management
Custom SKUs streamline operations when used with order management systems by enabling:
- Rapid inventory status checks
- Efficient order processing
- Accurate restocking alerts
Strategic Application of ASINs and SKUs
Combining both identification systems creates operational synergies:
- Listing optimization: Incorporating ASINs in product metadata improves search visibility
- Inventory control: SKU-based tracking prevents stockouts and overstock situations
- Performance analysis: Cross-referencing both identifiers yields actionable sales insights
Mastering these identification systems forms the foundation for successful Amazon marketplace operations, enabling sellers to optimize product visibility while maintaining efficient inventory control.