Add a prefix to the file name of a log file

In the BlackBerry Administration Service, on the Servers and components menu, expand BlackBerry Solution topology > BlackBerry Domain > Component view > Logging.
Click the BlackBerry Device Service instance.
On the Instance information tab, click Edit instance.
In the General section, in the Log file prefix field, type the prefix that you want to add to the log files.
Click Save all.
Restart the affected BlackBerry Device Service services.