This message is sent by a bank which has received a guarantee to the bank which has issued the guarantee. It may also be sent by a bank which has been requested to issue a guarantee to the bank which requested the issuance of the guarantee.
It is used to advise the Receiver that it has been released of all liability for the amount specified in field 33B or field 39C.
The Sender's charges may also be accounted for in this message.