Specifies how long the order remains in effect. Absence of this field is interpreted as DAY.
Valid values:
| '0' | Day |
| '1' | Good Till Cancel (GTC) |
| '2' | At the Opening (OPG) |
| '3' | Immediate or Cancel (OC) |
| '4' | Fill or Kill (FOK) |
| '5' | Good Till Crossing (GTX) |
| '6' | Good Till Date |
Used in: