Contract number: ECHA/2020/666  II.22. REIMBURSEMENTS  II.22.1  If provided for in the special conditions or in the tender specifications, the  contracting authority must reimburse expenses directly connected with the  provision of the services either when the contractor provides it with supporting  documents or on the basis of flat rates.  II.22.2  The contracting authority reimburses travel and subsistence expenses on the basis  of the shortest itinerary and the minimum number of nights necessary for  overnight stay at the destination.  II.22.3  The contracting authority reimburses travel expenses as follows:  (a) travel by air: up to the maximum cost of an economy class ticket at the time  of the reservation;  (b) travel by boat or rail: up to the maximum cost of a first class ticket;  (c) travel by car: at the rate of one first class rail ticket for the same journey and  on the same day;  II.22.4  The contracting authority reimburses subsistence expenses on the basis of a daily  subsistence allowance as follows:  (a) for journeys of less than 200 km for a return trip, no subsistence allowance is  payable;  (b) the daily subsistence allowance is payable only on receipt of supporting  documents proving that the person concerned was present at the destination;  (c) the daily subsistence allowance takes the form of a flat-rate payment to cover  all subsistence expenses, including meals, local transport including transport  to and from the airport or station, insurance and sundries;  (d) the daily subsistence allowance is reimbursed at the flat rates specified in  Article I.5.3; (e) accommodation is reimbursed on receipt of supporting documents proving the  necessary overnight stay at the destination, up to the flat-rate ceilings  specified in Article I.5.3. II.22.5  The contracting authority reimburses the cost of shipment of equipment or  unaccompanied luggage if it has given its prior written approval for the expense.  II.23.1  If an amount is to be recovered under the terms of the FWC, the contractor must  repay the contracting authority the amount in question. 42  II.23. RECOVERY  In addition, the contracting authority reimburses travel outside Union territory if it has  given its prior written approval for the expenses. 