Artikel 7

The present Convention may not be denounced before the expiry of two years from the date on which it has entered into force in respect of that Member of the League or non-member State; such denunciation shall take effect as from the ninetieth day following the receipt by the Secretary-General of the notification addressed to him.
Every denunciation shall be immediately communicated by the Secretary-General of the League of Nations to all the Members of the League of Nations and to the non-member States on whose behalf the present Convention has been signed or acceded to.
Each denunciation shall take effect only as regards the Member of the League of Nations or the non-member State, on whose behalf it has been made.