Locating the stock keeping unit number is often the first hurdle for anyone managing inventory, whether you are unpacking a new shipment or troubleshooting a listing online. The sku number acts as a unique fingerprint for a specific product variant, and finding it reliably saves time and prevents costly errors. This guide walks through the most common places to check and the best practices for keeping these identifiers organized.
Understanding What a SKU Number Is
A sku number is an internal code created by a business to track inventory within its own systems. Unlike a universal product code, which is assigned by manufacturers, this identifier is designed for internal use and can include letters, numbers, or a combination of both. It usually reflects attributes like size, color, material, or location, making it easier to pinpoint an exact item. Because it is unique to your organization, no other retailer will have the exact same code for that product variant.
Where to Look on Physical Products and Packaging
On physical items, the sku number is often printed directly on the product label or a attached tag. You might find it on the back of a garment near the size tag, on the bottom of electronics packaging, or on a corner of the item’s packaging box. Look for a barcode or a string of characters labeled "SKU" or "Item Code". If the product is still in its original box, the sku number may also be printed on the box exterior or on a small sticker on the sealed carton.
Check the product tag or label attached to the item.
Inspect the original retail box or packaging for a printed code.
Look for a barcode that includes a label indicating "SKU".
Finding SKU Numbers in Digital Systems
For online stores and digital inventory tools, the sku number is typically visible in the product management section of your platform. In an ecommerce dashboard, you can usually locate it while editing a product listing under the inventory or variants section. In accounting or warehouse software, it may appear on the item details screen, often alongside fields for cost, supplier, and bin location. If you are using a marketplace like Amazon or eBay, the seller platform often displays a separate sku number in the inventory reports.
Common Locations in Popular Platforms
Different systems organize data differently, but the sku number is generally found in a dedicated inventory field. In Shopify, it appears in the product editor under the "Variant SKU" field. In WooCommerce, you can find it in the main product data panel or within each variation. For Amazon sellers, the sku number is often listed in the SKU column of your inventory reports. In wholesale or B2B software, it might be labeled as "Item Code" or "Internal ID" and located on the master product sheet.
Log into your ecommerce platform and navigate to the product details page.
Look for fields labeled SKU, Item Number, or Product Code.
Export inventory reports if you need to locate multiple items quickly.
Using Sales and Purchase Records
If you are trying to track down a sku number for an item you already sold or received, your order history is a reliable place to search. In an invoice or packing slip, the sku number is often listed next to the product name, either in the item description column or in a dedicated identifier field. Purchase orders from suppliers typically include this code in the product specifications section, which helps ensure you receive the correct replacement or restock the exact variant. Checking these documents is especially useful when the physical tag has been removed or lost.
