InvcAssgnmtSts
                Mandatory
                Hdr
                Mandatory
                AssgnmtList
                Repetition (1..n)
                Idr
                Mandatory
                IsseDt
                Mandatory
                RltdDoc
                Repetition (0..n)
                AmtCutOffDt
                Optional
                Assgne
                Mandatory
                Assgnr
                Mandatory
                NtfctnInf
                Repetition (0..n)
                FinItm
                Repetition (0..n)
                ItmCnt
                Mandatory
                CtrlSum
                Optional
                TtlReqAmt
                Optional
                TtlReqFincg
                Optional
                AgrdRate
                Optional
                FincgInstlmt
                Repetition (0..n)
                SeqId
                Mandatory
                PmtDueDt
                Mandatory
                Amt
                Mandatory
                PmtInstrm
                Optional
                PmtTp
                Mandatory
                PmtMtdCd
                Mandatory
                PyeeCdtrAcct
                Mandatory
                PyeeFI
                Mandatory
                PyerDbtrAcct
                Optional
                PyerFI
                Optional
                FinInstnId
                Mandatory
                BIC
                Optional
                ClrSysMmbId
                Optional
                Nm
                Optional
                PstlAdr
                Optional
                Othr
                Optional
                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
                BrnchId
                Optional
                AddtlInf
                Optional
                VldtnStsInf
                Optional
                FincgSts
                Optional
                AssgnmtCnt
                Optional
                ItmCnt
                Optional
                CtrlSum
                Optional
                AttchdMsg
                Repetition (0..n)