I now use Refinitiv 365 and the RDP.HistoricalPricing function in Excel. In the past, I used the DSGrid in Datastream and RY gave me the redemption yield. By any chance, do you know what is te equivalent code to RY for the RDP.HistoricalPricing function (see the question marks below). I tried "YIELD", but it corresponds to the current yield instead I think.
In Refinitiv 365=RDP.HistoricalPricing(".TRXVFRGOV10E","???","START:19-Sep-2016 END: INTERVAL:P1D SOURCE:RFV",,"SORT:ASC TSREPEAT:NO CH:Fd RH:Timestamp")
I checked and found that the RDP interday historical pricing provides data for the following fields.
You can contact the content support team directly via MyRefiniv and ask for another RIC or field which can provide the redemption yield.