The reimbursement of the allowance received by the student is due:
1° In full if the student does not settle in the deficit area by the contractually agreed date. In the absence of specific provisions in the contract provided for in article D. 1511-55, reimbursement is due in full no later than the day after the planned date of installation;
2° In part if the period of installation is less than five years or the contractually agreed period. The repayment terms and conditions are specified in the contract provided for in article D. 1511-55.