All or a substantial portion of your mission critical data is at a significant risk of loss or corruption.
You have had a substantial loss of service.
Your business operations have been severely disrupted.
Operations can continue in a restricted fashion, although long-term productivity might be adversely affected.
A major milestone is at risk. Ongoing and incremental installations are affected.
A temporary workaround is available.
Impaired operations of some components, but allows the user to continue using the software.
Initial installation milestones are at minimal risk.
Cosmetic issues, including errors in the documentation.