Article 229-1 of the French Civil Code
Where the spouses agree on the breakdown of the marriage and its effects, they shall record, each assisted by a lawyer, their agreement in an agreement in the form of a private deed countersigned by their lawyers and drawn up under the conditions provided for in Article 1374. This agreement is filed with a notary, who checks that the formal requirements set out in 1° to 6° of article 229-3…