| Tag | Field Name | Req'd | Comments |
|---|
| StandardHeader | | Yes |
MsgType = X
|
| 1021 | MDBookType | No | Describes the type of book for which the feed is intended. Can be used when multiple feeds are provided over the same connection |
| 1022 | MDFeedType | No | Describes a class of service for a given data feed, ie Regular and Market Maker |
| 75 | TradeDate | No | Used to specify the trading date for which a set of market data applies |
| 262 | MDReqID | No |
Conditionally required if this message is in response to a Market Data Request.
|
| MDIncGrp | | Yes |
Number of entries following.
|
| 813 | ApplQueueDepth | No |
Depth of application messages queued for transmission as of delivery of this message
|
| 814 | ApplQueueResolution | No |
Action taken to resolve application queuing
|
| RoutingGrp | | No | |
| StandardTrailer | | Yes | |