State Errors (Category X'20')
Sense codes in this category indicate a sequence number error, or a request/response header (RH) or request/response unit (RU) that is not allowed in the receiver's current state. This condition prevents delivery of the request to the intended half-session. The following codes are in this category.
| Code | Meaning |
|---|---|
| 2001 | Sequence number error |
| 2002 | Chaining error |
| 2003 | Bracket error |
| 2004 | Direction error |
| 2005 | Data traffic reset |
| 2006 | Data traffic quiescent |
| 2007 | Data traffic not quiescent |