The licensing system of CATIA Version 4 is IBM License Use Management (LUM). More information on LUM can be obtained on the IBM web site at http://www.ibm.com/software/lum or in the LUM 4.6.8 CDROM that may have been distributed with this CATIA Version 4 package.
LUM does not need to be configured if your license is node locked.
To use concurrent licenses, you need to install and configure a LUM server and configure LUM clients.
A minimum level of 4.6.8 is required on all platforms.
LUM 4.6.8 + 4.6.8.3 patch is the latest level certified by Dassault Systemes. It is recommended to migrate your LUM servers to this level.