To edit an existing product listing on Amazon, follow these steps:
1) Click on the “Inventory” tab and select “Manage Inventory.”
2) Find the product you want to edit by using the search bar or browsing through your list of products.
3) Click the “Edit” button to make changes to the product listing.
4) Update the information you want to change, such as the product title, description, images, or price.
5) Click the “Save” button to apply the changes to the product listing.