Voidability
The status of an unlawful administrative act that remains effective unless and until it is challenged and annulled by a competent authority.
Voidability describes the normal consequence of defects in administrative decisions: the act is unlawful but remains binding until set aside through appeal, objection, revision or another available procedure. This approach protects legal certainty and the functioning of administration. In Swiss administrative law, most errors in competence, procedure, fact-finding or legal interpretation make a decision contestable, not automatically void. If the affected person misses the applicable remedy period, the decision may become final despite its defect, unless exceptional grounds such as nullity apply.