Within HREFLang Builder our main project “view” screen and export will show you how many URL’s are included for each country as well as any errors. This is a great way to monitor consistency between counties.
In this example, nearly every country had a different number of URL’s in addition to a lot of errors which are represented by the red numbers. In the case of the main site used for x-default, there were nearly 7 times more errors than pages on the site.
Each of these errors wastes the time of the search engine and over time may result in them ignoring your XML site maps.