I extended my navigation with Schema.org attributes and found the following.
Since I use a navigation template that is used in several places on the website, the type "SiteNavigationElement" has also been inserted in several places. As a result, I get several recognized "SiteNavigationElement" types in the google testing tool (see picture). Of course, the url's of the individual navigation items are different, so it looks good at first glance.
But here I wonder if that is positive or negative for google if several "SiteNavigationElement" types are recognized?