Plant Scheduling is a critical module required to perform detailed finite scheduling and timely replenishment planning, effectively simulate production capacity, and evaluate production scenarios for meeting total demand. It helps to plan many products that can only be made by the campaign on a single unit, plan production campaigns taking into account catalyst changeover issues, carry out product sequencing based on minimum transitions, review stock balances and compare with inventory targets based on “shelf life” issues of certain chemicals. It enables schedulers with the ability to build a packaging plan and schedule based on no. of drums available. It also helps in reconciling the inevitable differences between production plans and reality.