Bad next b-tree node at level <num>.
  Expected b-tree node at logical dbkey <num>:<num>:<num>.
  Found next b-tree node at logical dbkey <num>:<num>:<num>.

  Explanation:  This message tells the user an index  verification
  error  was  found  when  verifying  the  "next b-tree node" of a
  b-tree node.  The "next b-tree node" of a b-tree node B at level
  L is the next level L node on the right of b-tree node B.

  User Action:  Rebuild the corrupted index.