Urgent
Interruption making a critical functionality inaccessible or a complete interruption causing a severe impact on services availability. There is no possible alternative.
High
Critical functionality or access interrupted, degraded or unusable, having a severe impact on services availability. No acceptable alternative is possible.
Medium
Non-critical function or procedure, unusable or hard to use having an operational impact, but with no direct impact on services availability. A workaround is available.
Low
Application or personal procedure unusable, where a workaround is available or a repair is possible.