Mental reservation
The mental reservation as a lack of will means that a contracting party wants to (make) the declaration but not its content. At the time of the expression of will, the person making the declaration is fully aware that it does not correspond to his or her decision. The declaration is binding on the bona fide third party.
Term-Nr.: 570
German: Mentalreservation (538)
Source: LK-Lötscher, 11.05.2020