Neighbouring farmer says he owns my shed

The neighbour claims that the shed is within his maps and that he actually owns it.

Image credit: Irish Examiner

Dear Karen,

The farmlands that I own have been in my family for generations. There is a shed at the end of the lane, which I use for storing tools and small machinery, however, my neighbour, whom I have always got on with, has recently started to say that he owns it.

https://www.irishexaminer.com/farming/arid-41358172.html