The modeling and digitization of a supply chain are important assets for optimizing the functioning of this chain. However, these modeling and digitization operations are not always easy, especially if they take into consideration, in addition to economic aspects, other aspects such as environmental aspects. In order to facilitate the implementation of these modeling and digitization operations, we propose a preliminary audit of the supply chain before starting the modeling and digitization processes. This preliminary step ensures that a set of criteria has been respected before starting to develop a model or project to digitize the chain. In this paper, we will focus on the case of a distribution supply chain for a company operating in the production of equipment for the automotive industry. We consider the case of an international company with several production plants, implemented in several countries, and with several distribution warehouses and several car manufacturing customers.