Defines the subordinate trading session at which the order will be activated.
| Code | Meaning |
|---|---|
| 1 | Pre-Trading |
| 2 | Opening or opening auction |
| 3 | (Continuous) Trading |
| 4 | Closing or closing auction |
| 5 | Post-Trading |
| 6 | Scheduled intraday auction |
| 7 | Quiescent |
| 8 | Any auction |
| 9 | Unscheduled intraday auction |
| 10 | Out of main session trading |
| 11 | Private auction |
| 12 | Public auction |
| 13 | Group auction |
| 14 | Order initiated auction |