Server processing for the command command fails because the node group name node group name specified refers to a node group that is already defined in the server database.
Database changes for the command are rolled back and server operation continues. The command is not successful in changing the server database.
Issue the command again, specifying a node group name that is not defined in the server database. For a list of the names of defined node groups in the server database, issue the QUERY NODEGROUP command.