A Sor Kor 1 is a document that evinces a historic right of title over a parcel of land. It grants the holder the right to convert it into another document either a Chanote or a Nor Sor 3 Khor. One of the common difficulties associated with this kind of deed is that the measurements used then were not accurate. Given the antiquity of this form of title deed, the technologies available today that could give an accurate reading of the parcel of land were probably not availed of back then. This has resulted in the proliferation of these kinds of titles in the real estate sector. As this practice continued, more and more individuals have used these documents to represent ownership over a parcel of land in the country. A Sor Kor 1 cannot be transmitted except to an heir. That is why it is imperative that the title holder change his or her titled to that of a Chanote or Sor Kor 3.