Every product that you input into the system must have at least one variant. For example in the product list picture below shows one product that is "Winter Coat" where the product does not have variants and of course the product will not be able to sell on the sell menu. By using the features on the product with no variant tools menu you don't need to check or delete them manually one by one. The following are the steps to use product with no variant tools :
Step 1. Go to merge menu then click product with no variant tab
Step 2. Checklist Product that appears then click the delete button
**note : The products that appear on this page are products with no variants
Step 3. Delete products with no variant successful
You can confirm it back on the Product menu page by checking manually or by searching for the product.