StgSttlmInstr
                Mandatory
                MsgRefId
                Mandatory
                FctvDtDtls
                Optional
                AcctId
                Repetition (1..n)
                MktId
                Mandatory
                SttlmCcy
                Optional
                SttlmDtls
                Mandatory
                SctiesDtls
                Choice
                StgSttlmPties
                Mandatory
                Dpstry
                Mandatory
                Pty1
                Optional
                PtyId
                Mandatory
                AnyBIC
                Choice
                PrtryId
                Choice
                Mandatory
                Issuer
Issr
                Mandatory
                Definition: Entity that assigns the identification.
Type: Max35Text (String)
Restrictions:
- MinLength: 1
- MaxLength: 35
SchmeNm
                Optional
                NmAndAdr
                Choice
                AcctId
                Optional
                PrcgId
                Optional
                Pty2
                Optional
                Pty3
                Optional
                Pty4
                Optional
                Pty5
                Optional
                LclMktId
                Repetition (0..n)
                RegnDtls
                Optional
                CshPtiesDtls
                Choice
                SplmtryData
                Repetition (0..n)