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:
0 - Symbol <55>
2 - Product <460>
4 - All Securities
The Security List Request may also be used to request a list of securities for a given market segment.
Security List Request