(2) When the competent authority or the competent institution of a Party has paid to a recipient of benefits a sum in excess of that to which he is entitled that competent authority or competent institution may, within the conditions and limits laid down by the legislation which it administers, request the competent authority or the competent institution of any other Party responsible for the payment of benefits to that recipient to deduct the amount overpaid from the amounts which it pays to the said recipient. The latter competent authority or competent institution shall make the deduction under the conditions and within the limits provided for such setting-off by the legislation which it administers, as if the sums had been overpaid by itself, and shall transfer the amounts deducted to the creditor authority or institution.