This task is one section of Odoo inventory and products: five everyday tasks, with 4 related tasks on one page.
1. Add an attribute
Go to Sales → Configuration → Settings, enable Variants under Product Catalog, and save. Open a storable or consumable product. On the Attributes & Variants tab, add one attribute such as Size with two values. Save. When variant creation is Instantly, Odoo creates the variants then.
2. Keep the test simple
Leave both variants at the same price for this test. You can add an extra price later, after the choice itself works.
3. Pick one on a quotation
Create a quotation and add the product. Choose one size. The line should name that variant, not only the template.
4. Do not assume they share a quantity
If the product is stocked, each variant has its own quantity. Selling the small size must not reduce the large size.
5. Frequently asked questions
Should I create two products instead?
Use variants when they are the same item with a choice. Use two products when the items are sold and stocked differently.
Can I delete a variant that has orders?
Do not delete it. Archive it if you no longer sell it.
Why do I see only the template?
The attribute was not saved, or variants are not enabled in Sales settings.
6. Related articles and next steps
Odoo documents attributes and variant creation in the Odoo 19 product variants page.
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