AcctMndtMntncAmdmntReq
                Mandatory
                Refs
                Mandatory
                Fr
                Optional
                CtrctDts
                Optional
                UndrlygMstrAgrmt
                Optional
                AcctId
                Repetition (1..n)
                AcctSvcrId
                Mandatory
                Mandatory
                AnyBIC
                Optional
                LEI
                Optional
                Othr
                Repetition (0..n)
                Mandatory
                Scheme Name
SchmeNm
                Optional
                Definition: Name of the identification scheme.
Type: OrganisationIdentificationSchemeName1Choice
Cd
                Choice
                Prtry
                Choice
                Issr
                Optional
                Mndt
                Repetition (0..n)
                Grp
                Repetition (0..n)
                DgtlSgntr
                Repetition (0..n)
                SplmtryData
                Repetition (0..n)