AcctOpngAmdmntReq
                Mandatory
                Refs
                Mandatory
                Fr
                Optional
                CtrctDts
                Optional
                UndrlygMstrAgrmt
                Optional
                Acct
                Mandatory
                AcctSvcrId
                Mandatory
                Financial Institution Identification
FinInstnId
                Mandatory
                Definition: Unique and unambiguous identification of a financial institution, as assigned under an internationally recognised or proprietary identification scheme.
Type: FinancialInstitutionIdentification18
BICFI
                Optional
                ClrSysMmbId
                Optional
                LEI
                Optional
                Nm
                Optional
                PstlAdr
                Optional
                Othr
                Optional
                BrnchId
                Optional
                Org
                Mandatory
                Mndt
                Repetition (0..n)
                Grp
                Repetition (0..n)
                RefAcct
                Optional
                DgtlSgntr
                Repetition (0..n)
                SplmtryData
                Repetition (0..n)