When the insurer intends to invoke the nullity of the insurance contract, its suspension or the suspension of cover, non-insurance or partial insurance against the victim or his beneficiaries, he must, by registered letter or by electronic registered letter, with acknowledgement of receipt, declare this to the guarantee fund and attach to his declaration the supporting documents for his exception; he must at the same time and in the same manner notify the victim or his beneficiaries, specifying the number of the contract.
If the insurer intends to contest the existence of the insurance contract, notwithstanding the presentation by the person responsible for the accident of the supporting document referred to in article R. 211-15, it must, on the one hand, declare this without delay to the guarantee fund by registered letter or by electronic registered letter, with acknowledgement of receipt and, on the other hand, notify the victim or his successors at the same time and in the same manner.