This error that you are seeing in DI is the result of redundant data being imported into Unity Real Time. During the import process our program checks to make sure that the data currently going in is not a identical value to one already present inside of Unity Real Time.
If the value is already present (same date and time stamp, as well as value) then it is considered to be redundant data and will be rejected. However, there is no rejection log created for these occurrences since there are numerous situations where re-sending data takes place. The rejection log itself would grow to be very large and take up more system resources.
If you require further assistance please contact Bio-Rad Software Support at 800-854-6737 option 3.