| BBOWeightIndicatorCodeSet | 3 | Alpha | | |
| BrokenTradeReasonCodeSet | 4 | Alpha | Indicates the reason a trade was broken. | |
| CapacityCodeSet | 5 | Alpha | The capacity specified on the order. | |
| CrossTypeCodeSet | 7 | Alpha | The cross type specified on the order. | |
| CustomerTypeCodeSet | 8 | Char | | |
| DiscretionPriceTypeCodeSet | 12 | Alpha | | |
| DisplayCodeSet | 13 | Alpha | The accepted display type for the order. | |
| EventCodeCodeSet | 16 | Alpha | | |
| HandleInstCodeSet | 21 | Alpha | | |
| InterMarketSweepEligibilityCodeSet | 22 | Alpha | | |
| LiquidityFlagCodeSet | 23 | Alpha | | |
| OrderCancelReasonCodeSet | 30 | Alpha | Indicates the reason an order was canceled. | |
| OrderRejectReasonCodeSet | 32 | Numeric | Indicates the reason an order was rejected. | |
| OrderRestateReasonCodeSet | 33 | Alpha | Indicates the reason an order was restated. | |
| OrderStateCodeSet | 34 | Alpha | | |
| PostOnlyCodeSet | 37 | Alpha | | |
| PriceTypeCodeSet | 39 | Char | | |
| SharesLocatedCodeSet | 45 | Alpha | For short sell orders, indicates whether shares are located. | |
| SideCodeSet | 46 | Alpha | | |
| TimeInForceCodeSet | 48 | Alpha | Corresponds to TimeInForce (59) in Nasdaq FIX. | |
| TradeNowCodeSet | 50 | Alpha | | |
| TypeCodeSet | 51 | Alpha | Identifies the message type. | |
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