PurgeOrdersUSOptionsV1 (BZX Only) (Sunset 03/23/26)
| Field | Hexadecimal | Description |
|---|---|---|
| StartOfMessage | b0 e3 | BOE3 (58288, 0xe3b0) |
| MessageLength | 43 00 | 67 |
| MessageType | e0 07 | PurgeOrdersUSOptionsV1 (2016, 0x07e0) |
| MatchingUnit | 00 | 0 |
| Reserved | 00 | 0 |
| SequenceNumber | bd 01 00 00 | 445 |
| MassCancelID | 6d 61 73 73 63 78 6c 2d 35 35 34 34 00 00 00 00 00 00 00 00 | masscxl-5544 |
| ClearingFirm | 00 00 00 00 | |
| RoutingFirmID | 00 00 00 00 | |
| RiskRoot | 00 00 00 00 00 00 | |
| MassCancelInst | 00 00 00 00 00 00 00 00 | |
| SendTime | 00 00 00 00 00 00 00 00 | 1970-01-01 00:00:00.000000 |
| Scratchpad | 00 00 | 0 |
| CustomGroupIDCnt | 02 | 2 |
| customGroups.CustomGroupID[1/2] | 12 00 | 18 |
| customGroups.CustomGroupID[2/2] | 1e 01 | 286 |