This message is sent by the Receiver of a collateral claim, a collateral proposal or a proposal/request for collateral substitution.
It is used to advise the status of the received message.
It may also be used to:
reject a collateral claim, collateral proposal or the proposal/request of a collateral substitution
accept a collateral claim, collateral proposal or the proposal/request of a collateral substitution
advise the settlement details of proposed collateral
reply to a cancellation request previously sent by the Receiver
re-send a message previously sent (Subfunction of the message is DUPL)
provide a third party with a copy of the message for information (Subfunction of the message is COPY)
re-send to a third party a copy of the message for information (Subfunction of the message is CODU)
