When an instruction is sent to a party other than the original Receiver, this original Receiver is identified in the other parties sequence as :95a::MERE (Recipient of the Message).
When a broker is identified as a confirming party, the party capacity (:22F::TRCA) must be specified in subsequence B1.
When an ETC service provider transfers a message from one institution to another, and when the originator of the message is not already identified in the confirmation parties sequence or the settlement parties sequence, then the originating party is identified in the other parties sequence as :95a::MEOR (Originator of Message).
This message may only be sent by an ETC service provider on behalf of an institution or executing broker in a market-side trade to a custodian or clearing agent.
The Receiver of a request to cancel must advise the requesting party that the request has been accepted or denied in an MT 509 Trade Status Message.