Tag Field Name Req'd Comments
Component Block - <StandardHeader> Y

MsgType = CN

324 SecurityStatusReqID Y

Must be unique, or the ID of previous Security Mass Status Request to disable if SubscriptionRequestType = Disable previous Snapshot + Updates Request (2).

Component Block - <InstrumentScope> N
263 SubscriptionRequestType Y

SubcriptionRequestType indicates to the other party what type of response is expected. A snapshot request only asks for current information. A subscribe request asks for updates as the status changes. Unsubscribe will cancel any future update messages from the counter party.

1465 SecurityListID N
1301 MarketID N
1300 MarketSegmentID N
336 TradingSessionID N
625 TradingSessionSubID N
Component Block - <StandardTrailer> Y