3.In order to receive the lump sum fixed in Articles 1 to 12 in its entirety Member States shall confirm that they paid all costs incurred in the performance of the activity or test and that none of the costs have been borne by a third party, other than a Competent Authority. If part of the costs has been borne by a third party, Member States shall indicate the percentage or proportion of the total costs borne by that third party. The lump sum paid shall be reduced accordingly.