DescriptionThe Security Status Request message provides for the ability to request the status of a security. One or more Security Status messages are returned as a result of a Security Status Request message. The Security Status Request message contains a SubscriptionRequestType <263> field. This tells the counter party what type of request is being made: 0 — indicates that the requestor only wants a snapshot or the current status. 1 — indicates that the requestor wants a snapshot (the current status) plus updates as the status changes. This is similar to subscribing for information and can be implemented in applications as a subscription mechanism. 2 — indicates that the requestor wishes to cancel any pending snapshots or updates — in essence making this an unsubscribe operation. Security Status Request Structure
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