A tool commonly used as a central repository for all risks identified by the program team and approved by the Risk Management Board (RMB). It includes information for each risk such as risk category, risk statement, likelihood, consequence, planned mitigation measures, the risk owner, Work Breakdown Structure (WBS)/Integrated Master Schedule (IMS) linkage and, where applicable expected closure dates and documentation of changes. Programs may consider combining the risk, issue, and opportunity registers into a single register.