To enable the insurance undertakings involved in a co-insurance transaction to benefit from the exemption provided for in Article L. 365-1, the transaction must meet the following conditions:
1° The risk is covered by a single contract in return for an overall premium for the same duration ;
2° The insurers are not jointly and severally liable;
3° One of the insurers is designated as the lead insurer: this insurer must assume its management role and, in this capacity, determine the terms and conditions of insurance and pricing.