The statutory rule requires the consent of the property owner. A sentence in the purchase contract, an invoice or an internal inventory list does not automatically perform that function. The review must therefore identify the public register in which the annotation appears and the document on which it is based.
The machine should be described so that it can be distinguished from other installations. A technical designation, manufacturer, type, serial number, location and, where applicable, an inventory number create a reliable assignment. If there are several machines, each unit should be recorded separately because an annotation cannot automatically be extended to a different installation.
Read the land-register extract together with the document collection. The extract shows that an annotation exists. The underlying document may clarify which machine is covered, who consented and whether the contract describes the same installation.