The Herbie.IoT-ISC program for the internal supply chain incorporates the principles of DDSCM (Demand Driven Supply Chain Management), can be used in various business environments where it is necessary to prepare, plan and monitor the implementation of procurement operations according to the principles of management to orders and / or stock management also in environments that include constraints and / or bottlenecks. The Herbie.IoT program module for the internal supply chain is a new software tool that enables the preparation and monitoring of the implementation of complex internal supply chain replacement operations, which ensures the timely purchase of the necessary components and materials.