9. Expenses, including travelling expenses, are reimbursed on the terms and conditions stipulated in the contract, subject to the following and, where applicable, to what is provided for in section 10:
(1) the reimbursement must exclude the amount of taxes eligible for a refund or a credit to which the advocate or notary is entitled under a fiscal law;
(2) the reimbursement of expenses incurred by the advocate or notary to hire an external expert to assist in the performance of the contract is conditional on the prior written acceptance of the body;
(3) the body determines the supporting documents to be provided by the advocate or notary.