Executor count is less than number of nodes specified.

  Explanation:   The  number  of  executors  specified  with   the
  Executor_Count qualifier is less than the number of nodes listed
  with the Node qualifier for  a  parallel  backup  command.   The
  extra node names specified are ignored,

  User Action:  Increase the number of  executors  or  reduce  the
  number of nodes in the node list.