ATMRcncltnAdvc
                Mandatory
                Hdr
                Mandatory
                PrtctdATMRcncltnAdvc
                Optional
                ATMRcncltnAdvc
                Optional
                SctyTrlr
                Optional
                Content Type
CnttTp
                Mandatory
                Definition: Type of data protection.
Type: ContentType2Code (String)
Allowed Values:
- DATA (Plain Data): Generic, non cryptographic, or unqualified data content - (ASN.1 Object Identifier: id-data).
 - SIGN (Signed Data): Digital signature - (ASN.1 Object Identifier: id-signedData).
 - EVLP (Enveloped Data): Encrypted data, with encryption key - (ASN.1 Object Identifier: id- envelopedData).
 - DGST (Digested Data): Message digest - (ASN.1 Object Identifier: id-digestedData).
 - AUTH (Authenticated Data): MAC (Message Authentication Code), with encryption key - (ASN.1 Object Identifier: id-ct-authData).
 
AuthntcdData
                Mandatory