Your seller performance and your Order Defect Rate are negatively affected when you receive one-star or two-star feedback ratings. The most frequent causes of negative feedback are problems with your product listing or order fulfillment process. Here are a few things you can do to help prevent negative feedback:
Maintain a minimum stock level.
Synchronize your back-end systems to make sure you can match stock availability to ship times.
Provide accurate product descriptions and include images with your listings. It's important that buyers receive the product as described on the product detail page.
Make sure your customer service phone number and email address are correct in your online Amazon Help pages.
Ensure that every communication with buyers is courteous, relevant, and appropriate.