This message is sent by the issuing bank, or the nominated bank if so authorised by the issuing bank, to a paying/accepting/negotiating bank in response to a request for authorisation to pay/accept/negotiate/incur a deferred payment undertaking previously requested via an MT 750 Advice of Discrepancy or otherwise.
It is used to advise the Receiver that documents may be taken up, notwithstanding the discrepancies, provided they are otherwise in order.