BuyInRgltryAdvc
                Mandatory
                AcctOwnr
                Optional
                SfkpgAcct
                Mandatory
                BuyInAttrbts
                Repetition (1..n)
                Reference
Ref
                Mandatory
                Definition: References of the failing transaction.
Type: References23
AcctOwnrTxId
                Optional
                AcctSvcrTxId
                Optional
                MktInfrstrctrTxId
                Optional
                PrcrTxId
                Optional
                PoolId
                Optional
                CmonId
                Optional
                TradId
                Optional
                BuyInStat
                Mandatory
                BuyInDfrrl
                Mandatory
                FinInstrmId
                Optional
                Qty
                Optional
                BuyInPric
                Optional
                CshCompstnAmt
                Optional
                BuyInSttlmDt
                Optional
                SplmtryData
                Repetition (0..n)