Amazon supports only one product detail page for a given unique product in order to provide a positive shopping experience. In some cases, Amazon may incorrectly assign a listing to a product detail page that represents a different product. Amazon may also merge multiple product detail pages with identical attributes into one product detail page to avoid customer confusion and difficult product search and purchasing decisions.
Incorrect product merges can result in:
In either case, you can request reversal of the incorrect product merge by using the Split product detail pages self –service tool: