CTGKM3477E Failed to reconfigure Db2® HADR on a master server during cluster merging. Check the debug log for more information.

  Explanation Reconfiguration of
Db2 HADR on at least one HADR master server
failed during merging of the two clusters. 

  System action
   The merge clusters operation fails.

  Administrator response
   Check the debug log file to find the root cause, correct the problem, and retry the operation.