The purpose of this contract is to set up and maintain in operational and safety condition a connector between the Peppol network and the Chorus Pro platform, as well as the provision of associated services. It aims to enable the receipt by Chorus Pro of electronic invoices meeting Peppol standards (Peppol bis 5a Billing V3 - Europe at least), and issued by suppliers relying on the Peppol network (Edelivery Network).