This message is sent by a party (as the beneficiary or on behalf of the beneficiary) to a party which has issued an undertaking (guarantee, demand guarantee, standby letter of credit or dependent undertaking), either directly or via a third party.
It is used to demand payment under an undertaking and may include a request to extend the expiry date.
The demand itself must be specified as narrative text within the message. It may indicate availability of supporting documentation in addition to the demand.