For decision making accurate product costs are needed. If possible, the cost accounting system should produce product costs that simultaneously are accurate and satisfy financial reporting conventions If not, then the cost system must produce two sets of product costs: one that satisfies financial reporting criteria and one that satisfies management decision-making needs The operational control information system is a cost management subsystem designed to provide accurate and timely feedback concerning the performance of managers and others relative to their planning and control of activities. Operational control erned with what activities should be performed and assessing how well they are find formed. focuses on identifying opportunities for improvement and helping to information ways to improve. A good operational control information system provides aspects of that helps managers engage in a program of continuous improvement of all their businesses