From FIXwiki

FIX Message SecurityListRequest (MsgType=x)

MsgType	FIX Specification	First introduced	Deprecated
MsgType=x	PreTrade messages - SecuritiesReferenceData	FIX.4.3

The Security List Request message is used to return a list of securities from the counterparty that match criteria provided on the request

Subscription for security status can be optionally specified by including the SubscriptionRequestType[263] field on the message.

SecurityListRequestType[559] specifies the criteria of the request.

The Security List Request may also be used to request a list of securities for a given market segment.

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Notes

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