- The date on which the authentic instrument was drawn up
- The place where the authentic instrument was drawn up
- The signature by the parties of the authentic instrument
- The parties’ declarations
- Any observation made by the authority within the limits of its competence
- The measures the authority declares to have taken
- Appearance, identification and consent of the parties
Authentic instruments assembled by notaries have to contain all of the abovementioned information because failing to mention any one of them would render the document invalid as notarial acts (authentic instrument in this sense). The notary also has to establish if the declaration is given in a certain capacity (e.g. legal representative of a company) and how this capacity was determined. As mentioned Ad 2), it can also contain an enforcement clause.