The SKU field says "Already in use". How do I pick one that works?

A SKU must be unique across your whole store, including the SKUs of every variant. While you type, the SKU field checks it and shows ✓ Available or ✗ Already in use — pick a different SKU.

To fix it:

• Clear the field and click the Use “…” link under it to fill in the suggested SKU, or
• Add something to make your code unique, for example a colour or size, such as KURTA-101-BLUE.

Then click Save. If a variant's SKU clashes, you will see "Variant SKU ... is already in use". Change the code in that variant's SKU column, or leave it blank so Wcart creates one for you.