| 3 | Reject | Optional |
| 5 | Logout | Optional |
| 6 | IOI | Optional |
| 7 | Advertisement | Optional |
| 8 | Execution Report | Optional |
| 9 | Order Cancel Reject | Optional |
| A | Logon | Optional |
| B | News | Optional, in group NoLinesOfText (33) |
| C | Email | Optional, in group NoLinesOfText (33) |
| D | New Order Single | Optional |
| E | New Order List | Optional, in group NoOrders (73) |
| F | Order Cancel Request | Optional |
| G | Order Cancel/Replace Request | Optional |
| J | Allocation Instruction | Optional |
| K | List Cancel Request | Optional |
| L | List Execute | Optional |
| M | List Status Request | Optional |
| N | List Status | Optional, in group NoOrders (73) |
| P | Allocation Ack | Optional |
| Q | Dont Know Trade | Optional |
| R | Quote Request | Optional |
| S | Quote | Optional |
| T | Settlement Instructions | Optional |
| W | Market Data Snapshot Full Refresh | Optional, in group NoMDEntries (268) |
| X | Market Data Incremental Refresh | Optional, in group NoMDEntries (268) |
| Y | Market Data Request Reject | Optional |
| AA | Derivative Security List | Optional, in group NoRelatedSym (146) |
| AB | New Order Multileg | Optional |
| AC | Multileg Order Cancel/Replace | Optional |
| AD | Trade Capture Report Request | Optional |
| AE | Trade Capture Report | Optional, in group NoSides (552) |
| AG | Quote Request Reject | Optional |
| AI | Quote Status Report | Optional |
| AJ | Quote Response | Optional |
| AK | Confirmation | Optional |
| AL | Position Maintenance Request | Optional |
| AM | Position Maintenance Report | Optional |
| AN | Request For Positions | Optional |
| AO | Request For Positions Ack | Optional |
| AP | Position Report | Optional |
| AQ | Trade Capture Report Request Ack | Optional |
| AR | Trade Capture Report Ack | Optional |
| AS | Allocation Report | Optional |
| AT | Allocation Report Ack | Optional |
| AU | Confirmation Ack | Optional |
| AW | Assignment Report | Optional |
| AX | Collateral Request | Optional |
| AY | Collateral Assignment | Optional |
| AZ | Collateral Response | Optional |
| BA | Collateral Report | Optional |
| BB | Collateral Inquiry | Optional |
| BG | Collateral Inquiry Ack | Optional |
| BH | Confirmation Request | Optional |
| BJ | Trading Session List | Optional, in group NoTradingSessions (386) |
| BK | Security List Update Report | Optional, in group NoRelatedSym (146) |
| BM | Allocation Instruction Alert | Optional |
| BN | Execution Ack | Optional |
| BO | Contrary Intention Report | Optional |
| BP | Security Definition Update Report | Optional |
| BQ | Settlement Obligation Report | Optional |
| BR | Derivative Security List Update Report | Optional, in group NoRelatedSym (146) |
| BS | Trading Session List Update Report | Optional, in group NoTradingSessions (386) |
| BU | Market Definition | Optional |
| BV | Market Definition Update Report | Optional |
| BW | Application Message Request | Optional |
| BX | Application Message Request Ack | Optional |
| BY | Application Message Report | Optional |
| BZ | Order Mass Action Report | Optional |
| CA | Order Mass Action Request | Optional |
| CB | User Notification | Optional |
| CD | Stream Assignment Report | Optional, in group NoRelatedSym (146) |
| CE | Stream Assignment Report ACK | Optional |
| CF | Party Details List Request | Optional |
| CG | Party Details List Report | Optional |
| CH | Margin Requirement Inquiry | Optional |
| CI | Margin Requirement Inquiry Ack | Optional |
| CJ | Margin Requirement Report | Optional |
| CK | Party Details List Update Report | Optional |
| CL | Party Risk Limits Request | Optional |
| CM | Party Risk Limits Report | Optional |
| CO | Security Mass Status | Optional, in group NoRelatedSym (146) |
| CR | Party Risk Limits Update Report | Optional |
| CS | Party Risk Limits Definition Request | Optional |
| CT | Party Risk Limits Definition Request Ack | Optional |
| CU | Party Entitlements Request | Optional |
| CV | Party Entitlements Report | Optional |
| CW | Quote Ack | Optional |
| CX | Party Details Definition Request | Optional |
| CY | Party Details Definition Request Ack | Optional |
| CZ | Party Entitlements Update Report | Optional |
| DA | Party Entitlements Definition Request | Optional |
| DB | Party Entitlements Definition Request Ack | Optional |
| DC | Trade Match Report | Optional, in group NoTrdMatchSides (1890) |
| DD | Trade Match Report Ack | Optional |
| DE | Party Risk Limits Report Ack | Optional |
| DF | Party Risk Limit Check Request | Optional |
| DG | Party Risk Limit Check Request Ack | Optional |
| DH | Party Action Request | Optional |
| DI | Party Action Report | Optional |
| DJ | Mass Order | Optional |
| DK | Mass Order Ack | Optional |
| DL | Position Transfer Instruction | Optional |
| DM | Position Transfer Instruction Ack | Optional |
| DN | Position Transfer Report | Optional |
| DO | Market Data Statistics Request | Optional |
| DP | Market Data Statistics Report | Optional |
| DQ | Collateral Report Ack | Optional |
| DY | Pay Management Request | Optional |
| EA | Pay Management Report | Optional |
| b | Mass Quote Ack | Optional |
| c | Security Definition Request | Optional |
| d | Security Definition | Optional |
| f | Security Status | Optional |
| h | Trading Session Status | Optional |
| j | Business Message Reject | Optional |
| k | Bid Request | Optional |
| l | Bid Response | Optional, in group NoBidComponents (420) |
| m | List Strike Price | Optional, in group NoStrikes (428) |
| q | Order Mass Cancel Request | Optional |
| r | Order Mass Cancel Report | Optional |
| s | New Order Cross | Optional, in group NoSides (552) |
| t | Cross Order Cancel Replace Request | Optional, in group NoSides (552) |
| u | Cross Order Cancel Request | Optional, in group NoSides (552) |
| v | Security Type Request | Optional |
| w | Security Types | Optional |
| x | Security List Request | Optional |
| y | Security List | Optional, in group NoRelatedSym (146) |
| z | Derivative Security List Request | Optional |