A high-level capacity planning system often developed at the family level that provides an overall check of critical resources and verifies the feasibility of the master production schedule and sales and operations plan. It uses a bill of resource for items or families that specifies the requirements for key resources only, as opposed to all operations as done on the routing. Resource requirements from the S&OP and suggested MPS are compared to availability, on an overall weekly or monthly basis, and indicate projected over and under capacity situations that could impact the successful completion of the plan.