CancelOrderUSEquitiesV1 Message Fields
| Field | Offset | Length | Data Type | Description |
|---|---|---|---|---|
| StartOfMessage | 0 | 2 | Binary | 0xB0 0xE3 |
| MessageLength | 2 | 2 | Binary | |
| MessageType | 4 | 2 | Binary | 0x0FA3 |
| MatchingUnit | 6 | 1 | Binary | Zero (from member message) |
| Reserved | 7 | 1 | Binary | MUST be zero from member |
| SequenceNumber | 8 | 4 | Binary | |
| OrigClOrdID | 12 | 20 | Text | |
| ClearingFirm | 32 | 4 | Alpha |