1. The TREX record format and MQM communication protocol are used by firms to send messages to the Clearing Corporation to allocate, claim, reject, release and change or delete allocations and claims. The Clearing Corporation sends a confirmation back to the firms for each of these actions.
2. The Clearing Corporation sends an allocation or claim record for processing by the firm’s bookkeeping system for each of the above actions performed online.
3. The Clearing Corporation sends a record/message to the allocating firm for the marking of a trade for give-ups or for changing the quantity on a give-up summary record.
4. The Clearing Corporation sends alerts to the allocating firm for claims and rejects by the claiming firm.
5. The Clearing Corporation sends alerts to the claiming firm for allocations, releases, deletes, and changes by the allocating firm.
6. The Clearing Corporation sends error messages in cases of invalid firm/origin, invalid TREX format, summary record not found, and trying to accept and sub-allocate more than is allocated.