CtrctRegnClsrReq
                Mandatory
                GrpHdr
                Mandatory
                Message Identification
MsgId
                Mandatory
                Definition: Point to point reference, as assigned by the instructing party, and sent to the next party in the chain to unambiguously identify the message.
Type: Max35Text (String)
Restrictions:
- MinLength: 1
 - MaxLength: 35
 
CreDtTm
                Mandatory
                NbOfItms
                Mandatory
                InitgPty
                Mandatory
                FwdgAgt
                Optional
                RegdCtrctClsr
                Repetition (1..n)
                SplmtryData
                Repetition (0..n)