| Class | Description | 
|---|---|
| AsyncErrataCloneCounter | If someone attempts to schedule a synchronous errata clone into a
 channel that has asynchronous errata clones taking place in the
 background, a database deadlock will occur. | 
| ErrataManager | ErrataManager is the singleton class used to provide business operations
 on Errata, where those operations interact with other top tier business
 objects. |