Does your CMDB data comes from Discovery or other interfaces? If yes, don't   touch that field. A lot of devices/applications have a specific code which contains information about itself. For eg: A tomcat apache server has an attribute field which tells what version it is running on. So, if there is any data coming from Discovery or other interfaces like SCCM, you should not be touching this field. Otherwise, it is safe to use it.

Please mark helpful/correct as suitable.