Kedudukan Hukum Pihak Yang Menguasai Secara Fisik Objek Hak Atas Tanah Berdasarkan Akta Jual Beli Tanpa Kepemilikan Sertipikat (Studi Putusan Mahkamah Agung Nomor 3081 K/Pdt/2021) = Legal Standing Of A Party Who Physically Own Land Right Based On Sale And Purchase Deed Without Owning A Certificate (Study Supreme Court Decision Number 3081 K/Pdt/2021)