Symbol Mapping Message
| Length | 1E | 30 bytes |
| Type | 2E | Symbol Mapping Message |
| Feed Symbol | 30 30 6D 45 56 4F | 00mEVOO |
| OSI Symbol | 4D 53 46 54 20 20 31 39 30 39 32 30 43 30 30 31 35 30 30 30 30 | MSFT 190920C00150000 |
| Symbol Condition | 43 | ‘C’ - Closing Only |
| Underlying | 4D 53 46 54 20 20 20 20 | MSFT |