CollSbstitnReq
                Mandatory
                Mandatory
                Oblgtn
                Mandatory
                Agrmt
                Optional
                CollSbstitnRtr
                Mandatory
                CollSbstitnDlvr
                Optional
                CollSbstitnSeq
                Mandatory
                SbstitnRqrmnt
                Mandatory
                CollSbstitnTp
                Mandatory
                StdSttlmInstrs
                Optional
                SctiesColl
                Repetition (0..n)
                CollId
                Optional
                SctyId
                Mandatory
                MtrtyDt
                Optional
                LtdCvrgInd
                Optional
                Qty
                Mandatory
                Pric
                Optional
                MktVal
                Optional
                Hrcut
                Optional
                CollVal
                Optional
                ValDt
                Optional
                SfkpgAcct
                Optional
                BlckChainAdrOrWllt
                Optional
                SfkpgPlc
                Mandatory
                SttlmParams
                Optional
                Trade Date
TradDt
                Mandatory
                Definition: Indicates the date as known by the two parties to be used for matching purposes when settlement of securities occurs.
Type: ISODateTime
Restrictions:
SttlmPties
                Optional
                CollOwnrsh
                Mandatory
                CshColl
                Repetition (0..n)
                OthrColl
                Repetition (0..n)
                LkdRefs
                Optional
                SplmtryData
                Repetition (0..n)