Dbkey of duplicate node for data node is <num>:<num>:<num>

  Explanation:  This message gives  the  dbkey  of  the  duplicate
  node,  so  that  the  integrity  of  the  index  can be verified
  manually, if necessary.

  User Action:  Ascertain if the  index  is  corrupt  by  manually
  verifying  the owner node after dumping that page.  If the index
  is corrupt, rebuild it.