CollSbstitnReq
                Mandatory
                Mandatory
                Oblgtn
                Mandatory
                Agrmt
                Optional
                CollSbstitnRtr
                Mandatory
                CollSbstitnDlvr
                Optional
                CollSbstitnSeq
                Mandatory
                SbstitnRqrmnt
                Mandatory
                CollSbstitnTp
                Mandatory
                StdSttlmInstrs
                Optional
                SctiesColl
                Repetition (0..n)
                CshColl
                Repetition (0..n)
                OthrColl
                Repetition (0..n)
                CollId
                Optional
                LttrOfCdtId
                Optional
                LttrOfCdtAmt
                Optional
                GrntAmt
                Optional
                OthrTpOfColl
                Optional
                IsseDt
                Optional
                XpryDt
                Optional
                LtdCvrgInd
                Optional
                Issr
                Optional
                ValDt
                Optional
                XchgRate
                Optional
                MktVal
                Optional
                Hrcut
                Optional
                CollVal
                Mandatory
                SfkpgPlc
                Optional
                SfkpgAcct
                Optional
                BlckChainAdrOrWllt
                Optional
                Identification
Id
                Mandatory
                Definition: Unambiguous identification for the account between the account owner and the account servicer.
Type: Max140Text (String)
Restrictions:
- MinLength: 1
- MaxLength: 140
Tp
                Optional
                Nm
                Optional
                LkdRefs
                Optional
                SplmtryData
                Repetition (0..n)