What messages should be outputted by performing XPSExport?
If "Complete" is displayed, may I consider that it is completed successfully?
What messages should be outputted at the time of XPSExport failure.
When XPSExport is failed, (ERROR) or (FATAL) is outputted.
"Complete" is the generic message we log when we complete a task of exporting, but it is outputted also when it failed.
As long as you get Complete message (without FATAL and ERROR) and get an xml file, it is likely the export was successful.