Which term refers to incidents that have not yet impacted a service operation?

The term that accurately describes incidents that have not yet impacted a service operation is "Pending Incidents." Pending incidents refer specifically to issues that are identified but have not yet caused any disruption or degradation in service. These incidents may be in the process of being resolved or investigated, and while they are acknowledged, they do not currently affect the operations in a noticeable way.

"Open Incidents" describes active incidents that are being addressed but may or may not have had an impact. "Configuration Failures" typically refer to issues where the configurations of systems or services have errors leading to failures, directly affecting performance. "Major Incidents" are usually significant events that cause substantial disruption to service operations, making them contrary to the definition of incidents that have not yet impacted operations.