How to get the Log file of 'Load data from file'

Summary:

To get the log files of 'Load Data from file'

Content (required):

We are using Load Data From File web service to push data into HCM. We are also using an FF to validate the data and send only valid data to HDL. We are putting it in the log of the FF (ESS_LOG) whenever a validation fails for a record. It is getting printed in the log file, but we want to send the log file to users to validate.

We cannot find any way how we can get the handle of the log file, of a particular request of 'Load Data From File'. Can some one please let us know how we can retrieve the log files in this case. Also do we have any web services to do that?