SKU
A short internal code you assign to a product so you can track it across listings, variations, and outside Etsy.
- Stands for: Stock Keeping Unit
- Where it lives: Listing edit page > Inventory & pricing
- Character limit: 32
- Visible to buyers: No
- Required by Etsy: No
A SKU (Stock Keeping Unit) is a code you invent for your own inventory tracking. Etsy doesn’t require it, doesn’t validate it, and doesn’t show it to buyers - but it shows up in your CSV exports, your variation editor, and any tool that talks to the Etsy API.
A useful SKU encodes information: the product family, size, color, or batch. MUG-BLU-11OZ is more useful than A0001. Stick to a pattern across your shop so future-you can grep your spreadsheet without thinking.
Where SKU shows up
- The Inventory & pricing section of the listing edit page.
- Each variation row, when a listing has variations.
- CSV exports as the sku column (one row per variation when the listing has them).
- Etsy Open API listing endpoints (sku field on inventory products).
Why it matters even if Etsy doesn’t care
- Cross-channel sellers (Etsy + Shopify + wholesale) use the same SKU as a join key.
- Bulk edits in Everlyst, Shop Uploader, or any spreadsheet workflow are infinitely easier when SKU is unique and predictable.
- Inventory accounting (COGS, restocks, supplier orders) is impossible without one.
If your shop has zero SKUs today, the cleanest fix is to assign them in a CSV export, then re-import. Don’t try to type 800 SKUs into the Etsy UI one at a time.
- Leaving SKUs blank, then trying to do inventory accounting later from photos and titles.
- Reusing the same SKU across two different products - every variation should be unique.
- Burying meaningful data in random IDs like "A0001" that mean nothing six months from now.
- Pick a pattern (e.g. CATEGORY-COLOR-SIZE) and stick with it shop-wide.
- Reuse the same SKU on every channel so you have one truth across Etsy, Shopify, and your accounting.
- When a variation changes (new color), give it a new SKU rather than overwriting the old one - your historical sales reports will thank you.
Other glossary entries that connect to this one
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