PrtryFrmtInvstgtn
                Mandatory
                Assgnmt
                Mandatory
                Case
                Optional
                Mandatory
                Cretr
                Mandatory
                Party
Pty
                Choice
                Definition: Identification of a person or an organisation.
Type: PartyIdentification135
Nm
                Optional
                PstlAdr
                Optional
                Optional
                CtryOfRes
                Optional
                CtctDtls
                Optional
                Agt
                Choice
                ReopCaseIndctn
                Optional
                PrtryData
                Mandatory
                SplmtryData
                Repetition (0..n)