request_body = {
    "ExtractionRequest": {
        "@odata.type": "#DataScope.Select.Api.Extractions.ExtractionRequests.TermsAndConditionsExtractionRequest",
        "ContentFieldNames": [
           "RIC", "CUSIP", "ISIN", "SEDOL"
        ],
        "IdentifierList": {
            "@odata.type": "#DataScope.Select.Api.Extractions.ExtractionRequests.InstrumentIdentifierList",
            "InstrumentIdentifiers": [
                {
                    "Identifier": "66",
                    "IdentifierType": "FileCode"
                }
            ]
        }
    }
}

I use the above REST API body to retrieve RIC, CUSIP, ISIN, SEDOL of ASX listed securities from TermsAndConditionsExtractionRequest. In the code snippet above

"Identifier": "66",

66 is for ASX. Where can I find values of other exchanges? For example NASDAQ, NYSE etc.

Thanks.