Article R524-1 of the French Code of civil enforcement procedures
The creditor shall proceed with the seizure by serving a document on one of the persons mentioned in articles R. 232-1 to R. 232-4 as appropriate. This document contains, under penalty of nullity: 1° The name and domicile of the debtor or, in the case of a legal entity, its name and registered office; 2° An indication of the authorisation or title by virtue of which the seizure is carried…