The NCX (Negative Customer Experience) is the number of orders that customer reported a product or listing issue against total orders.

Here we need to understand that these types of complaints may not be reflected in REVIEWS or SELLER RATINGS.

Client may call Amazon and that complaint will be reflected in Voice Of Customer dashboard.

When NCX INCREASES then listing may be under threat of deactivation/suspension.

When you are selling on Amazon with Wholesale FBA model of business, then you need to keep an eye on this Dashboard. As you are selling others brand and these metrics will help you identify issues with product and you will be able to take action in time.

In screenshot you can see for example, dashboard of one of my account with Wholesale FBA/FBM products.