CorpActnInstrStsAdvc
                Mandatory
                InstrId
                Optional
                OthrDocId
                Repetition (0..n)
                CorpActnGnlInf
                Mandatory
                CorpActnEvtId
                Mandatory
                OffclCorpActnEvtId
                Optional
                ClssActnNb
                Optional
                EvtTp
                Mandatory
                Cd
                Choice
                Prtry
                Choice
                Identification
Id
                Mandatory
                Definition: Proprietary information, often a code, issued by the data source scheme issuer.
Type: Exact4AlphaNumericText (String)
Restrictions:
- Pattern: [a-zA-Z0-9]{4}
Issr
                Mandatory
                SchmeNm
                Optional
                InstrPrcgSts
                Repetition (1..n)
                CorpActnInstr
                Optional
                PrtctInstr
                Optional
                AddtlInf
                Optional
                SplmtryData
                Repetition (0..n)