AcctMndtMntncAmdmntReq
                Mandatory
                Refs
                Mandatory
                Fr
                Optional
                CtrctDts
                Optional
                UndrlygMstrAgrmt
                Optional
                AcctId
                Repetition (1..n)
                AcctSvcrId
                Mandatory
                Mandatory
                Mndt
                Repetition (0..n)
                ModCd
                Optional
                Mandatory
                Applicable Channel
AplblChanl
                Repetition (1..n)
                Definition: Channel for which the operation mandate is valid. If ApplicableChannel equals Fax, this means that a bank operation instruction sent by fax will be processed according to the mandates exchanged in this message.
Type: Channel2Choice
Cd
                Choice
                Prtry
                Choice
                ReqrdSgntrNb
                Mandatory
                SgntrOrdrInd
                Mandatory
                MndtHldr
                Repetition (0..n)
                BkOpr
                Repetition (1..n)
                StartDt
                Optional
                EndDt
                Optional
                Grp
                Repetition (0..n)
                DgtlSgntr
                Repetition (0..n)
                SplmtryData
                Repetition (0..n)