AcctMndtMntncAmdmntReq
                Mandatory
                Refs
                Mandatory
                Fr
                Optional
                CtrctDts
                Optional
                UndrlygMstrAgrmt
                Optional
                AcctId
                Repetition (1..n)
                AcctSvcrId
                Mandatory
                Mandatory
                Mndt
                Repetition (0..n)
                Grp
                Repetition (0..n)
                DgtlSgntr
                Repetition (0..n)
                Pty
                Mandatory
                Nm
                Optional
                PstlAdr
                Optional
                Optional
                Choice
                AnyBIC
                Optional
                LEI
                Optional
                Othr
                Repetition (0..n)
                Mandatory
                SchmeNm
                Optional
                Cd
                Choice
                Proprietary
Prtry
                Choice
                Definition: Name of the identification scheme, in a free text form.
Type: Max35Text (String)
Restrictions:
- MinLength: 1
 - MaxLength: 35
 
Issr
                Optional
                PrvtId
                Choice
                CtryOfRes
                Optional
                CtctDtls
                Optional
                Sgntr
                Mandatory
                SplmtryData
                Repetition (0..n)