| Tag | 
                              Field Name | 
                              Req'd | 
                              Comments | 
                           
                           
                              | 268 | 
                              NoMDEntries | 
                              Y | 
                              Number of Market Data Snapshot Full Refresh Data Blocks. | 
                           
                           
                              | => | 
                              269 | 
                              MDEntryType | 
                              Y | 
                              Must be the first field in this repeating group. | 
                           
                           
                              | => | 
                              270 | 
                              MDEntryPx | 
                              N | 
                              Conditionally required if MDEntryType is not Imbalance(A) ), Trade Volume (B), or Open Interest(C); Conditionally required
                                 when MDEntryType = "auction clearing price"
                               | 
                           
                           
                              | => | 
                              15 | 
                              Currency | 
                              N | 
                              Can be used to specify the currency of the quoted price. | 
                           
                           
                              | => | 
                              271 | 
                              MDEntrySize | 
                              N | 
                              Conditionally required if MDEntryType = Bid(0), Offer(1), Trade(2) ), Trade Volume (B), or Open Interest(C)
                                 conditionally required when MDEntryType = "auction clearing price"
                               | 
                           
                           
                              | => | 
                              272 | 
                              MDEntryDate | 
                              N | 
                               | 
                           
                           
                              | => | 
                              273 | 
                              MDEntryTime | 
                              N | 
                               | 
                           
                           
                              | => | 
                              274 | 
                              TickDirection | 
                              N | 
                               | 
                           
                           
                              | => | 
                              275 | 
                              MDMkt | 
                              N | 
                              Market posting quote / trade. Valid values:  
                                 See Volume 6:  Appendix 6-C
                               | 
                           
                           
                              | => | 
                              336 | 
                              TradingSessionID | 
                              N | 
                               | 
                           
                           
                              | => | 
                              625 | 
                              TradingSessionSubID | 
                              N | 
                               | 
                           
                           
                              | => | 
                              276 | 
                              QuoteCondition | 
                              N | 
                              Space-delimited list of conditions describing a quote. | 
                           
                           
                              | => | 
                              277 | 
                              TradeCondition | 
                              N | 
                              Space-delimited list of conditions describing a trade | 
                           
                           
                              | => | 
                              282 | 
                              MDEntryOriginator | 
                              N | 
                               | 
                           
                           
                              | => | 
                              283 | 
                              LocationID | 
                              N | 
                               | 
                           
                           
                              | => | 
                              284 | 
                              DeskID | 
                              N | 
                               | 
                           
                           
                              | => | 
                              286 | 
                              OpenCloseSettlFlag | 
                              N | 
                              Used if MDEntryType = Opening Price(4), Closing Price(5), or Settlement Price(6). | 
                           
                           
                              | => | 
                              59 | 
                              TimeInForce | 
                              N | 
                              For optional use when this Bid or Offer represents an order | 
                           
                           
                              | => | 
                              432 | 
                              ExpireDate | 
                              N | 
                              For optional use when this Bid or Offer represents an order.  ExpireDate and ExpireTime cannot both be specified in one Market
                                 Data Entry.
                               | 
                           
                           
                              | => | 
                              126 | 
                              ExpireTime | 
                              N | 
                              For optional use when this Bid or Offer represents an order.  ExpireDate and ExpireTime cannot both be specified in one Market
                                 Data Entry.
                               | 
                           
                           
                              | => | 
                              110 | 
                              MinQty | 
                              N | 
                              For optional use when this Bid or Offer represents an order | 
                           
                           
                              | => | 
                              18 | 
                              ExecInst | 
                              N | 
                              Can contain multiple instructions, space delimited. | 
                           
                           
                              | => | 
                              287 | 
                              SellerDays | 
                              N | 
                               | 
                           
                           
                              | => | 
                              37 | 
                              OrderID | 
                              N | 
                              For optional use when this Bid, Offer, or Trade represents an order | 
                           
                           
                              | => | 
                              299 | 
                              QuoteEntryID | 
                              N | 
                              For optional use when this Bid, Offer, or Trade represents a quote | 
                           
                           
                              | => | 
                              288 | 
                              MDEntryBuyer | 
                              N | 
                              For optional use in reporting Trades | 
                           
                           
                              | => | 
                              289 | 
                              MDEntrySeller | 
                              N | 
                              For optional use in reporting Trades | 
                           
                           
                              | => | 
                              346 | 
                              NumberOfOrders | 
                              N | 
                              In an Aggregated Book, used to show how many individual orders make up an MDEntry | 
                           
                           
                              | => | 
                              290 | 
                              MDEntryPositionNo | 
                              N | 
                              Display position of a bid or offer, numbered from most competitive to least competitive, per market side, beginning with 1 | 
                           
                           
                              | => | 
                              546 | 
                              Scope | 
                              N | 
                               | 
                           
                           
                              | => | 
                              811 | 
                              PriceDelta | 
                              N | 
                               | 
                           
                           
                              | => | 
                              58 | 
                              Text | 
                              N | 
                              Text to describe the Market Data Entry. Part of repeating group. | 
                           
                           
                              | => | 
                              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. | 
                           
                           
                              | => | 
                              1023 | 
                              MDPriceLevel | 
                              N | 
                              Display position of a bid or offer, numbered from most competitive to least competitive, per market side, beginning with 1 | 
                           
                           
                              | => | 
                              528 | 
                              OrderCapacity | 
                              N | 
                              Designates the capacity of the firm placing the order | 
                           
                           
                              | => | 
                              1024 | 
                              MDOriginType | 
                              N | 
                               | 
                           
                           
                              | => | 
                              332 | 
                              HighPx | 
                              N | 
                              Used to report high price in association with trade, bid or ask rather than a separate entity | 
                           
                           
                              | => | 
                              333 | 
                              LowPx | 
                              N | 
                              Used to report low price in association with trade, bid or ask rather than a separate entitty | 
                           
                           
                              | => | 
                              1020 | 
                              TradeVolume | 
                              N | 
                              Used to report trade volume in association with trade, bid or ask rather than a separate entity | 
                           
                           
                              | => | 
                              63 | 
                              SettlType | 
                              N | 
                               | 
                           
                           
                              | => | 
                              64 | 
                              SettlDate | 
                              N | 
                               | 
                           
                           
                              | => | 
                              1070 | 
                              MDQuoteType | 
                              N | 
                               | 
                           
                           
                              | => | 
                              83 | 
                              RptSeq | 
                              N | 
                              Used to identify the sequence number within a feed type | 
                           
                           
                              | => | 
                              1048 | 
                              DealingCapacity | 
                              N | 
                              Identifies role of dealer; Agent, Principal, RisklessPrincipal | 
                           
                           
                              | => | 
                              1026 | 
                              MDEntrySpotRate | 
                              N | 
                               | 
                           
                           
                              | => | 
                              1027 | 
                              MDEntryForwardPoints | 
                              N | 
                               | 
                           
                           
                              | => | 
                              278 | 
                              MDEntryID | 
                              N | 
                              Conditionally required when maintaining an order-depth book, that is, when AggregatedBook (266) is "N". allows subsequent
                                 Incremental changes to be applied using MDEntryID.
                               | 
                           
                           
                              | => | 
                              
                                    Component Block - <Parties> | 
                              N | 
                               | 
                           
                           
                              | => | 
                              198 | 
                              SecondaryOrderID | 
                              N | 
                              For optional use to support Hit/Take (selecting a specific order from the feed) without disclosing a private order id. | 
                           
                           
                              | => | 
                              40 | 
                              OrdType | 
                              N | 
                              Used to support market mechanism type; limit order, market order, committed principal order |