The next step after determining that a key control does not meet design expectations is to document the finding in the risk register, because this helps to record and track the information about the identified risk, such as its description, likelihood, impact, response, and status. A key control is a control that addresses a significant risk or supports a critical business process or objective. A control design expectation is a criterion or requirement that defines how the control should operate or perform to achieve its objective. If a key control does not meet its design expectation, it means that there is a gap, weakness, or deficiency in the control that may compromise its effectiveness or efficiency, and increase the risk exposure or impact. By documenting the finding in the risk register, the risk practitioner can communicate and report the risk issue to the relevant stakeholders, such as the risk owner, the management, or the auditor, and initiate the appropriate risk response actions, such as modifying the design of the control, implementing a compensating control, or accepting the risk. The other options are not the best next steps after determining that a key control does not meet design expectations. Invoking the incident response plan is a reactive measure that is triggered when a risk event occurs or is imminent, and requires immediate action to contain, mitigate, or recover from the incident. However, in this case, the risk event has not occurred yet, and there may be time to prevent or reduce it by improving the control design. Re-evaluating key risk indicators is a monitoring activity that measures and evaluates the level and impact of risks, and provides timely signals that something may be going wrong or needs urgent attention. However, in this case, the risk practitioner has already identified the risk issue, and needs to document and address it, rather than re-evaluate it. Modifying the design of the control is a possible risk response action that may be taken to improve the control and reduce the risk, but it is not the next step after determining that the key control does not meet design expectations. The next step is to document the finding in the risk register, and then decide on the best risk response action, which may or may not be modifying the design of the control, depending on the cost-benefit analysis, the risk assessment, and the risk response strategy. References = Risk IT Framework, ISACA, 2022, p. 13