My friend's mother sold him a portion of mother's land. The land is 360 sq. meters. The portion of land for sale is 128 sq meters (8x16). The acto de venta indicates only the size (8x16) of portion of land sold, but acto de venta does not indicate the location of the portion inside of the whole land (3 meters from left, 4 meters from front). In USA, such document would be incorrect. Is this acto de venta incorrect in DR? If it is incorrect, how to fix it?