Sev1 - Urgent
Catastrophic Failure – all work has halted or a work stoppage is imminent. The application system is unavailable or unusable. Or, data is being corrupted and work must be stopped to avoid further corruption/loss of data.
Sev2 - High
Application Inoperable/Data Corrupted – an application in the system is not working or has limited capability and the problem significantly impacts the customer.
Sev3 - Medium
Feature not working as documented – application has issues that can impact customer but that do not stop customer from performing daily business. Or, issues for which there is a reasonable workaround.
Sev4 - Low
Informational Question/Cosmetic Issue – problem/question with day-to-day operational issues, cosmetic problem with user interface, error in documentation