A global variable was incorrectly created that contained 2 question marks, and now we cannot delete it.
Release : 12.0
If you need to manually delete some autosys global variable that contains non-ascii characters you can do so via a direct database update.
NOTE - Non-ASCII characters at the end of lines during your sendevent -E SET_GLOBAL commands can cause issues.
Make sure to remove any/all trailing non-ascii characters from your sendevents before issuing the commands.