The assignment of an individual product or sku to more than one category within the hierarchy.
Multiclassing is to be avoided as it can cause double counting, misclassification, and general confusion. However, displaying a single item in multiple places in a website’s hierarchy can be very useful for marketing. For example, a blazer can be classified both in [Jackets] and [New Arrivals]. Cross-listing is a useful tool to get the benefits of multi-classing without the downsides and keep track of how the back-end relates to the front-end.