The common scenarios of changing the QlikView license details are:
Purchased new QlikView Server license
Purchased new QlikView Publisher license
Purchased more CALs
Need to update to a version that requires an updated License Enabler File (LEF)
Pre-requisite: Backup of license related files
It is recommended to do a backup of license related files on the QlikView server prior to updating license details. This allows for reverting to the previous license if the update causes any problems. QlikView license information is stored in two locations. Files from both locations, as specified below, must be copied to a safe location prior to updating or applying new license.
Root document folder. The location of this folder is defined in the QMC > System > Setup > QlikView Server > Folders tab > Root folder.