MDReqRejReason Field
Valid values:
0 = Unknown symbol
1 = Duplicate MDReqID
2 = Insufficient Bandwidth
3 = Insufficient Permissions
4 = Unsupported SubscriptionRequestType
5 = Unsupported MarketDepth
6 = Unsupported MDUpdateType
7 = Unsupported AggregatedBook
8 = Unsupported MDEntryType
9 = Unsupported TradingSessionID
A = Unsupported Scope
B = Unsupported OpenCloseSettleFlag
C = Unsupported MDImplicitDelete