PtyRegnAndGrntNtfctn
                Mandatory
                Hdr
                Mandatory
                ApplCntxt
                Optional
                LttrIdr
                Mandatory
                Dt
                Mandatory
                RltdLttr
                Repetition (0..n)
                RltdMsg
                Repetition (0..n)
                CnttIdr
                Repetition (0..n)
                InstrPrty
                Optional
                Orgtr
                Mandatory
                PmryRcpt
                Repetition (1..n)
                Sndr
                Repetition (0..n)
                AuthstnUsr
                Repetition (1..n)
                RspnRcpt
                Repetition (0..n)
                CpyRcpt
                Repetition (0..n)
                OthrPty
                Repetition (0..n)
                AssoctdDoc
                Repetition (0..n)
                GovngCtrct
                Repetition (0..n)
                LglCntxt
                Repetition (0..n)
                AddtlInf
                Optional
                Ntce
                Optional
                VldtnStsInf
                Optional
                DgtlSgntr
                Repetition (0..n)
                Party
Pty
                Optional
                Definition: Identification of the signing party. This message item is associated with QualifiedPartyIdentification1. In the corresponding XML Schema, this is expressed as an ID - IDREF relationship.
Type: xs:IDREF
Sgntr
                Mandatory
                NtfctnList
                Repetition (1..n)
                NtfctnCnt
                Optional
                ItmCnt
                Optional
                CtrlSum
                Optional
                AttchdMsg
                Repetition (0..n)