Which of the following is NOT an error severity supported by Epic?

In the context of error severity levels supported by Epic, the correct choice is Notification, as it does not represent a severity level for errors within the Epic framework. Epic categorizes error severities primarily into Critical, Fatal, and Severe, each indicating a different level of impact on system functionality or patient safety.

Critical errors typically require immediate action due to their potential to cause significant harm, whereas Fatal errors indicate that the system cannot continue operating. Severe errors are serious but may not require immediate corrective actions like Critical or Fatal errors. On the other hand, Notification does not categorize an error as severe but rather serves as an informational message that may not necessarily impact system operations or patient safety directly. Thus, it stands out as not fitting within the established categories of error severity in Epic.