CorpActnInstrStsAdvc
                Mandatory
                InstrId
                Optional
                OthrDocId
                Repetition (0..n)
                CorpActnGnlInf
                Mandatory
                InstrPrcgSts
                Repetition (1..n)
                CorpActnInstr
                Optional
                PrtctInstr
                Optional
                TxTp
                Mandatory
                PrtctTxSts
                Optional
                Optional
                Protect Safekeeping Account
PrtctSfkpgAcct
                Optional
                Definition: Account which submitted the original protect instruction used for cover protect instructions whereby one safekeeping account is covering on behalf of another safekeeping account.
Type: Max35Text (String)
Restrictions:
- MinLength: 1
- MaxLength: 35
PrtctDt
                Optional
                UcvrdPrtctQty
                Optional
                AddtlInf
                Optional
                SplmtryData
                Repetition (0..n)