Understand product variants, SKUs, and stock
Use variants for choices such as size or color, SKUs to identify exact items, and stock records to track how many units you can sell.
- Written and edited by
- DokanNao Editorial Team
- Reading time
- 2 minutes
Key takeaways
- Use a variant only when the customer is choosing a version of the same product.
- Give each item your team packs a stable unique SKU or equivalent internal identifier.
- Decide which system owns sellable stock and match and check every other channel to it.
In this guide
A product is the item customers see. A variant is a choice such as size or color. A SKU is your code for an exact item, and stock records show how many you can sell.
Separate a product from a variant
A T-shirt offered in several sizes can be one product with size variants when the description and buying intent remain the same. A different model, bundle, or item with substantially different information may deserve its own product page.
Do not create a variant merely to hide unrelated products in one page. Each choice should have a clear label and, where needed, its own price, stock, image, or identifier.
Use a SKU to identify the exact item
A SKU should help staff recognize the exact item in purchasing, storage, packing, returns, and reports. Make it unique, stable, readable, and independent from a customer title. Do not reuse a retired SKU for a different item.
SKU is not necessarily the barcode assigned under another standard. Document what each identifier means.
Track stock for each option you sell
If red size M and blue size M can sell out separately, stock belongs at the variant level. Set clear rules for reserving, reducing, restoring, and checking stock at each stage of an order. Decide how cancelled, returned, damaged, and unavailable items affect sellable quantity.
Prevent common setup mistakes
Avoid duplicate SKUs, negative unexplained stock, variants without labels, options that change price silently, and stock updated in several systems without an owner. Test the exact selected variant through cart, order record, packing, and cancellation.
Use the catalog structure guide before the small-business inventory process.