TagField NameXML NameData TypeUnion DatatypeDescriptionAddedDepr.Enums from tagValid values
1021MDBookType @MDBkTypint

Describes the type of book for which the feed is intended. Used when multiple feeds are provided over the same connection

FIX.4.4 / EP7
1=

Top of Book

[TopOfBook]
2=

Price Depth

[PriceDepth]
3=

Order Depth

[OrderDepth]

Used in messages:
[MarketDataIncrementalRefresh] [MarketDataSnapshotFullRefresh] [SecurityStatus]

Used in components:
[MarketDataFeedTypes]