The ownership differed in each field, even in the same shoen and in some particular cases (the shoen was temporarily regarded as kokugaryo (territories governed by provincial government office) to increase the burden ratio of cost for the sengu (transfer of a deity to a new shrine building) of dominant shrines such as Ise-jingu Shrine and so on) the rights and control of shoen were duplicated and transferred (the name of the same shoen was differently described in the documents) and thus it is difficult to recognize shoens in an unequivocal way.
同じ荘園内でも田畑ごとに所有権が異なったり、特殊な事情（伊勢神宮などの有力社の遷宮の際の費用の負担率を上げるために一時的に国衙領とする場合など）によって、荘園の権利が重複・移管されている場合（同じ荘園でも名称が異なって文章に表記されている）もあり、一概に認識するのは難しい。