I created a Custom Entity against RetailTransactionSalesTran table, and from this custom entity I did an Export in the application's Data Management workspace. However I did not get it fully success, it shows "Partially Succeed" with 9248 records exported and 7238 errors. I searched over the page UI and cannot find out where is the error details for those errors. And also I checked server side Event Viewer, and there is no error in Event Viewer. I wonder how do I find out what exactly those errors are ? I pasted the screentshot like below: