@achimsiegmund Structured Data is there to help other computers understand the content of a website and its associated business/product/service/etc. so if you have many articles, each will have their own data that is relevant to each instance, and so it is applicable to that page.
With the overall business, this information only needs to be provided once per website (provided it is a single business). If you have multiple businesses or presences, it will be worth considering a different plugin or creating your own code to provide this additional information.
Multiple sets of Structured Data on one page are fine, but replicating the same information across an entire website without offering anything new is not recommended and goes against best-practice.
You can read more about Schema/Structured Data at https://schema.org.