In the two forms of grouping mentioned in article R. 2142-20, one of the economic operators who is a member of the grouping, designated in the application and in the tender as the lead contractor, represents all the members vis-à-vis the purchaser and coordinates the services of the members of the grouping.
If the contract so provides, the leader of a joint grouping shall be jointly and severally liable, for the performance of the contract, with each of the members of the grouping for its contractual obligations to the purchaser.