Environment
Novell ZENworks Configuration Management 11.2 ZENworks Control Center - ZCC
Situation
Once entered, a System Variable name cannot be edited, it is necessary to delete and re-create the variable.
Resolution
This is fixed in version 11.2.1 - see KB 7010042 "ZENworks Configuration Management 11.2.1 - update information and list of fixes" which can be found at https://support.microfocus.com/kb/doc.php?id=7010042
Additional Information
The online help and online manual https://www.novell.com/documentation/zenworks11/zen11_cm_software_distribution/data/bn20wgn.html show that it should be possible to edit the variable name.