| 1 | duplicate mdreqid |
| 2 | insufficient bandwidth |
| 3 | insufficient permissions |
| 4 | unsupported subscriptionrequesttype |
| 5 | unsupported marketdepth |
| 6 | unsupported mdupdatetype |
| 7 | unsupported aggregatedbook |
| 8 | unsupported mdentrytype |
| 9 | unsupported tradingsessionid |
| A | unsupported scope |
| B | unsupported openclosesettleflag |
| C | unsupported mdimplicitdelete |