A Statutory Declaration is a document that is legal and one that is made under oath. A statutory declaration allows the person of interest to declare a truth of a set of statements. Such a declaration is often used to satisfy legal requirements and regulations, providing evidence of personal identity and status (identity, nationality, marital status), originality (of inventions or products), affirmation of origin (in the case of exportation and importation of goods), among other things.
The declarations must be true, as false declarations can lead to criminal offense and prosecution. The person of interest must declare under oath that the statements are truthful. These statements must be witnessed, and then are officiated.