In order to optimize the transport costs and in order to give a single entrance vector for the suppliers, the logistics of spare parts wishes to integrate its flows in the application called "Protocoles Logistiques Électroniques" (Electronics Logistics Protocols). The preliminary study and espacially the phases dealing with the collection of needs and the framing of solutions, allows to highlight the fact that it's necessary to manage the hybrid COFOR (Supplier Code) as a couple made of the Seller COFOR and the Shipper COFOR. The functionalities of the PLE application which were impacted in this project are modeled in EA. During the project implementation, the design and analysis phases show that it's interesting to use a double entrance conversion table in order to effectively address the needs. The user test phase allows to check that each requirement is covered and valid. The entire project is managed according to the PSA project process management. PLE's document management system is more efficient thanks to the applying of the SIFA (Fabrication Information Systems) document management process.