| Tag | Field Name | Req'd | Comments | 
                           
                              | <MessageHeader> | Y | MsgType <35> = AL | 
                           
                              | 710 | PosReqID | Y | Unique identifier for the position maintenance request as assigned by the submitter | 
                           
                              | 709 | PosTransType | Y |  | 
                           
                              | 712 | PosMaintAction | Y |  | 
                           
                              | 713 | OrigPosReqRefID | N | Reference to the PosReqID <710> of a previous maintenance request that is being replaced or canceled.
                                  | 
                           
                              | 714 | PosMaintRptRefID | N | Reference to a PosMaintRptID <721> from a previous Position Maintenance Report <AM> that is being replaced or canceled.
                                  | 
                           
                              | 715 | ClearingBusinessDate | Y | The Clearing Business Date referred to by this maintenance request | 
                           
                              | 716 | SettlSessID | N |  | 
                           
                              | 717 | SettlSessSubID | N |  | 
                           
                              | Component Block - <Parties> | Y | The Following PartyRoles can be specified: ClearingOrganization Clearing Firm Position Account | 
                           
                              | 1 | Account | Y |  | 
                           
                              | 660 | AcctIDSource | N |  | 
                           
                              | 581 | AccountType | Y | Type of account associated with the order (Origin) | 
                           
                              | Component Block - <Instrument> | Y |  | 
                           
                              | 15 | Currency | N |  | 
                           
                              | 555 | NoLegs | N | Specifies the number of legs that make up the Security | 
                           
                              | => | Component Block - <InstrumentLeg> | N | Insert here the set of "<InstrumentLeg>" (leg symbology) fields
                                  Required if NoLegs <555> > 0
                                  | 
                           
                              | 711 | NoUnderlyings | N | Specifies the number of underlying legs that make up the Security | 
                           
                              | => | Component Block - <UnderlyingInstrument> | N | Insert here the set of "<UnderlyingInstrument>" (underlying symbology) fields 
                                  Required if NoUnderlyings <711> > 0
                                  | 
                           
                              | 386 | NoTradingSessions | N | Specifies the number of repeating TradingSessionIDs | 
                           
                              | => | 336 | TradingSessionID | N | Required if NoTradingSessions <386> is > 0.
                                  | 
                           
                              | => | 625 | TradingSessionSubID | N |  | 
                           
                              | 60 | TransactTime | Y | Time this order request was initiated/released by the trader, trading system, or intermediary. | 
                           
                              | Component Block - <PositionQty> | Y |  | 
                           
                              | 718 | AdjustmentType | N | Type of adjustment to be applied, used for PCS & PAJ Delta_plus, Delta_minus, Final, If Adjustment Type is null, the request will be processed as Margin Disposition
                                  | 
                           
                              | 719 | ContraryInstructionIndicator | N | Boolean - if Y then indicates you are requesting a position maintenance that acting | 
                           
                              | 720 | PriorSpreadIndicator | N | Boolean - Y indicates you are requesting rollover of prior day's spread submissions | 
                           
                              | 834 | ThresholdAmount | N |  | 
                           
                              | 58 | Text | N |  | 
                           
                              | 354 | EncodedTextLen | N | Must be set if EncodedText <355> field is specified and must immediately precede it.
                                  | 
                           
                              | 355 | EncodedText | N | Encoded (non-ASCII characters) representation of the Text <58> field in the encoded format specified via the MessageEncoding <347> field.
                                  | 
                           
                              | <MessageTrailer> | Y |   |