Hi @Pro1997, Your query and endpoints look correct and I am able to get data from it. I used python and here is my request and response:

Request JSON:
{
 "ExtractionRequest": {
  "@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.TickHistoryTimeAndSalesExtractionRequest",
  "ContentFieldNames": ["Trade - Price", "Trade - Volume", "Trade - Exchange Time"],
  "IdentifierList": {
   "@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList",
   "InstrumentIdentifiers": [{
     "Identifier": "AAPL.O",
     "IdentifierType": "Ric"
    }
   ]
  },
  "Condition": {
   "MessageTimeStampIn": "GmtUtc",
   "ReportDateRangeType": "Range",
   "QueryStartDate": "2017-09-29T00:00:00.000Z",
   "QueryEndDate": "2017-09-29T12:00:00.000Z"
  }
 }
}

Response:
{
 "@odata.context": "https://hosted.datascopeapi.reuters.com/RestApi/v1/$metadata#RawExtractionResults/$entity",
 "JobId": "0x073ea4868f96d724",
 "Notes": ["Extraction Services Version 14.2.41795 (d0fe3ba7b1b1), Built Aug 27 2020 18:51:42 *****"]
}

#RIC,Domain,Date-Time,GMT Offset,Type,Price,Volume,Exch Time
AAPL.O,Market Price,2017-09-29T08:00:00.051760533Z,-4,Trade,153.11,10,08:00:00.009000000
AAPL.O,Market Price,2017-09-29T08:00:00.051760533Z,-4,Trade,153.11,1,08:00:00.009000000
AAPL.O,Market Price,2017-09-29T08:00:00.051760533Z,-4,Trade,153.11,6,08:00:00.009000000
AAPL.O,Market Price,2017-09-29T08:00:00.103591325Z,-4,Trade,153.27,100,08:00:00.088000000

I am not familiar with R programming, but you can see an example of it being used in this question. I can't see from your question, if you have used Auth token as Token + space + actual token