Ordinarily, this error is seen only by service support representatives. An attempt was made to modify the cluster ID alias. At least one cloud account is configured that is using the current cluster ID alias to identify data in the cloud. The cluster ID alias cannot be changed in this situation because data exists in cloud storage that refers to it.
If you specified the correct cluster and must change the cluster ID alias, you must first delete the associated cloud account by using the rmcloudaccount command. You can then retry the chsystem command.