Abstract
Today's dynamic, socioeconomic constraints often force enterprises to change their Business Processes (BP), for instance, by deleting some activities or merging certain work units. These changes induce functional changes on the business process whose performance might be affected. Consequently, there is need for a well-defined change measure and a control process to ensure the success of the BP management projects. This paper proposes to apply COSMIC Functional Size Measurement method to evaluate the BP functional changes to help both business process developers and decision makers to accept/defer or deny a functional change. The proposed evaluation identifies the real impact of a functional change on the project and provides indicators for analyzing the functional change status. In addition, when there are multiple change requests, it uses a heuristic algorithm to prioritize the changes while minimizing the required effort to answer them.