Hi Kristian, issue seems to be similar to this one:
basically users which are not part of the oneadmin group are restricted from using those attributes (hence the name).
I believe that most probably in your case you have to (comment, ommit) add a # at the beginning of the line in oned.conf (like below so that users which are not in the oneadmin group can use these attributes). If I am not mistaken you also need to restart opennebula service on the front-end:
#VM_RESTRICTED_ATTR = “USER_INPUTS/CPU”
#VM_RESTRICTED_ATTR = “USER_INPUTS/MEMORY”
#VM_RESTRICTED_ATTR = “USER_INPUTS/VCPU”
#VM_RESTRICTED_ATTR = “DISK/SIZE”
Hope this helps