Every entry in the register of the conclusiveness of a boundary shall be made by stating therein the physical boundary of the property along a specified line on the registry map or identified by any geographical or locational information and the part of it that is the ascertained line of the boundary, as, for instance, that the face or centre of the fence or wall or the centre or a specified side of a stream or drain along the line shown on the map is the boundary and is conclusive as between the adjoining owners, or as against all persons, as the case may be.
S.I. No. 483/2012
Land Registration Rules 2012
7 December 2012
www.irishstatutebook.ie/eli/2012/si/483