Instructions:
Note: When making changes to variations, we are referring to the specific attributes of the product, such as size, color, and material.
1. To make manual changes to variations, go to the “Inventory” tab on the top menu of Seller Central and select “Manage All Inventory.”

2. Click the arrow next to the parent ASIN to view its variations.
3. Select the “Edit” button to the right of the variation you wish to modify.

4. Proceed to modify the desired fields by navigating through the tabs at the top of the page.

5. Note that some fields may not be editable for child ASINs, as they are linked to the parent ASIN.
6. If a field cannot be edited in the variation table, you will need to click on the child ASIN and make the changes in the Product Listing Edit Page.

7. Changing the UPC may not allow you to modify the variation (e.g. color or size), so it is advisable to use the ASIN instead.

8. The Variation Theme cannot be manually altered.
9. After making changes, click “Save and Finish” at the bottom of the page.

10. If you encounter issues, contact Seller Support. You may refer to this SOP: How to file a ticket in Seller Central for reference.