This message is a request for the status of a security. One or more Security Status <35=f> messages are returned as a result.

This message contains SubscriptionRequestType (263) which specifies the type of the request:

• 0 – a snapshot of the current status
• 1 – a snapshot of the current status plus updates as the status changes (subscription)
• 2 – cancel any pending snapshots or updates (unsubscribe)