6. Except for the investigations carried out into the availability of public or parapublic immovables, the applicant may not undertake any action or incur any expense before receiving from the agency or the Minister, as the case may be, confirmation in writing that its leasing project has been duly approved.
The leasing project shall be carried out in accordance with all the provisions of the approval obtained. Where that is impossible, the applicant shall suspend any action undertaken to carry out the leasing project and shall submit an amended project for the purpose of obtaining a new approval.