| Tag | 
                              Field Name | 
                              Req'd | 
                              Comments | 
                           
                           
                              | 
                                    Component Block - <StandardHeader> | 
                              Y | 
                              MsgType = AN | 
                           
                           
                              | 710 | 
                              PosReqID | 
                              Y | 
                              Unique identifier for the Request for Positions as assigned by the submitter | 
                           
                           
                              | 724 | 
                              PosReqType | 
                              Y | 
                               | 
                           
                           
                              | 573 | 
                              MatchStatus | 
                              N | 
                               | 
                           
                           
                              | 263 | 
                              SubscriptionRequestType | 
                              N | 
                              
                                  Used to subscribe / unsubscribe for trade capture reports 
                                       If the field is absent, the value 0 will be the default 
                               | 
                           
                           
                              | 
                                    Component Block - <Parties> | 
                              Y | 
                              Position Account | 
                           
                           
                              | 1 | 
                              Account | 
                              N | 
                               | 
                           
                           
                              | 660 | 
                              AcctIDSource | 
                              N | 
                               | 
                           
                           
                              | 581 | 
                              AccountType | 
                              N | 
                              Type of account associated with the order (Origin) | 
                           
                           
                              | 
                                    Component Block - <Instrument> | 
                              N | 
                               | 
                           
                           
                              | 15 | 
                              Currency | 
                              N | 
                               | 
                           
                           
                              | 
                                    Component Block - <InstrmtLegGrp> | 
                              N | 
                              Specifies the number of legs that make up the Security | 
                           
                           
                              | 
                                    Component Block - <UndInstrmtGrp> | 
                              N | 
                              Specifies the number of  underlying legs that make up the Security | 
                           
                           
                              | 715 | 
                              ClearingBusinessDate | 
                              Y | 
                              The Clearing Business Date referred to by this request | 
                           
                           
                              | 716 | 
                              SettlSessID | 
                              N | 
                               | 
                           
                           
                              | 717 | 
                              SettlSessSubID | 
                              N | 
                               | 
                           
                           
                              | 
                                    Component Block - <TrdgSesGrp> | 
                              N | 
                              Specifies the number of repeating TradingSessionIDs | 
                           
                           
                              | 60 | 
                              TransactTime | 
                              Y | 
                              Time this order request was initiated/released by the trader, trading system, or intermediary. | 
                           
                           
                              | 725 | 
                              ResponseTransportType | 
                              N | 
                              Ability to specify whether the response to the request should be delivered inband or via pre-arranged out-of-band transport. | 
                           
                           
                              | 726 | 
                              ResponseDestination | 
                              N | 
                              URI destination name.  Used if ResponseTransportType is out-of-band. | 
                           
                           
                              | 58 | 
                              Text | 
                              N | 
                               | 
                           
                           
                              | 354 | 
                              EncodedTextLen | 
                              N | 
                              Must be set if EncodedText field is specified and must immediately precede it. | 
                           
                           
                              | 355 | 
                              EncodedText | 
                              N | 
                              Encoded (non-ASCII characters) representation of the Text field in the encoded format specified via the MessageEncoding field. | 
                           
                           
                              | 120 | 
                              SettlCurrency | 
                              N | 
                               | 
                           
                           
                              | 
                                    Component Block - <StandardTrailer> | 
                              Y | 
                               |