Hi @Alex Chan,

As this is directly related to content, I would suggest you contact DSS Content support via MyRefinitiv.

Anyway, could you try the following extraction request? From my testing, the value "Local Language Display Name" field is similar to the DSPLY_NMLL (1352) of Elektron real-time data.

POST https://hosted.datascopeapi.reuters.com/RestApi/v1/Extractions/ExtractWithNotes
{
    "ExtractionRequest": {
        "@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.IntradayPricingExtractionRequest",
        "ContentFieldNames": [
            "RIC",
            "Local Language Display Name"
        ],
        "IdentifierList": {
            "@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList",
            "InstrumentIdentifiers": [
                {
                    "Identifier": "0001.HK",
                    "IdentifierType": "Ric"
                }
            ],
            "ValidationOptions":null,
            "UseUserPreferencesForValidationOptions": true
        },
        "Condition": {
            "ScalableCurrency": true
        }
    }
}