I am using Dex2 COM to download the time series data from 1/1/2001 to 15/9/2017, with the fields TR.PriceClose and TR.Volume, of the ticker 0001.HK. I found that all the data points could be retrieved except on the day 26/5/2003 which was missing. However, I could get this data point by using Thomson Reuters Office Excel RHistory() function. I would like to know whether it is the only missing day with Dex2 COM, or there are other missing days too. I found that other tickers, like 0002.HK, 0003.HK, etc., also got 26/5/2003 data missing. Can I prevent this missing data using other Eikon API, like .Net API?