While the way you mapped this is not outright wrong, I personally try to map features without fully overlapping each other because then it becomes a bit awkward when you want to select one, but the other one keeps getting selected.
In this specific case, rather than mapping this fence as a separate object, you could simply add barrier=fence tag to the parking lot itself since that's one of the features of this parking lot..
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            Published using OSMCha: https://osmcha.org/changesets/149625407
            