In the context of the Supply Chain, PIC stands for "Industrial and Commercial Plan". The PIC is a medium-term plan that makes it possible to coordinate production objectives and commercial objectives. It takes into account demand forecasts, stock levels, production capacities, delivery times and production costs to establish a realistic production plan. The PIC serves as a guide for short-term operational planning and helps ensure that the necessary resources are available to meet demand in a timely manner. PIC is used to improve coordination and collaboration between production and sales teams, as well as to optimize supply chain performance.
Here is a more detailed article (in french) on the subject : Le PIC n’aura plus de secret pour vous