Tag Field Name Data Type Description Used in
365 EncodedUnderlyingSecurityDesc

AbbrName: EncUndSecDesc
data Encoded (non-ASCII characters) representation of the UnderlyingSecurityDesc (307) field in the encoded format specified via the MessageEncoding (347) field. If used, the ASCII (English) representation should also be specified in the UnderlyingSecurityeDesc field.
UnderlyingInstrument