ITIL 4 (LO6.2): Recall ITIL Practice Definitions
Known error
A problem that has been analysed but has not been resolved.
Change
The addition, modification, or removal of anything that could have a direct or indirect effect on services.
Event
Any change of state that has significance for the management of a service or other configuration item (CI). Events are typically recognized through notifications created by an IT service, CI, or monitoring tool.
Configuration item
Any component that needs to be managed in order to deliver an IT service
IT asset
Any financially valuable component that can contribute to the delivery of an IT product or service
Problem
A cause, or potential cause, of one or more incidents.
Incident
An unplanned interruption to a service or reduction in the quality of a service.