F1

Any communication sent to the Central Authority or to another authority of a Contracting State shall be in the original language, and shall be accompanied by a translation into the official language or one of the official languages of the other State or, where that is not feasible, a translation into French or English.

However, a Contracting State may, by making a reservation in accordance with Article 60, object to the use of either French or English, but not both.