How to get open/high/low/volume for currencies ?

Hi

I used to send the below request to fetch open/high/low/close/volume on currencies (ex: EUR= or GPB=).

{
    "ExtractionRequest": {
        "@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.ElektronTimeseriesExtractionRequest",
        "ContentFieldNames": ["Trade Date", "RIC", "Open", "High", "Low", "Universal Close Price", "Volume"],
        "IdentifierList": {
            "@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList",
            "InstrumentIdentifiers": [{
                "Identifier": "GBP=",
                "IdentifierType": "Ric"
            }],
            "ValidationOptions": {
                "AllowHistoricalInstruments": true
            },
            "UseUserPreferencesForValidationOptions": false
        },
        "Condition": {
            "ReportDateRangeType": "Range",
            "StartDate": "1996-01-01T00:00:00.000Z",
            "EndDate": "2020-02-10T23:59:59.999Z"
        }
    }
}

Since the 21st of Feb, it only returns null values for all except close.

Can you let me know if it's a client query, access rights or reuters issue ?

Best,

Benoit