The maximal length of the device name is restricted to 15 characters if Adjust network name if UMS-internal name has been changed is enabled under UMS Console > UMS Administration > Global Configuration > Device Network Settings. The length of the device name is not restricted if Adjust network name if UMS-internal name has been changed and Naming Convention are not activated under UMS Administration > Global Configuration > Device Network Settings. Each device name will be automatically overwritten in compliance with the naming convention, even if Adjust network name if UMS-internal name has been changed is enabled, in case Enable naming convention is activated under UMS Administration > Global Configuration > Device Network Settings.
See also (12.04.120) Device Network Settings for the IGEL UMS . | 
