RMAN Backup Based Duplicate Fails with RMAN-20207

While Cloning the database through RMAN Duplicate, faced the below error

 RMAN-00571: ===========================================================
  RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
  RMAN-00571: ===========================================================
  RMAN-03002: failure of Duplicate Db command at 00/00/000 00:00:00
  RMAN-05501: aborting duplication of target database
  RMAN-06004: ORACLE error from recovery catalog database: RMAN-20207: UNTIL TIME or RECOVERY WINDOW is before RESETLOGS time
 
CAUSE

 The RMAN duplicate is executed with a target database connection.
 A connection to target database is not allowed when using the "incarnation" keyword as stated in the Database Backup and Recovery Reference:

Duplication with a connection to a target does not support previous database incarnations.
However, you can specify previous incarnations if you are duplicating without a connection to a target database.
 
 
SOLUTION

Set the Database Incarnation back to an incarnation before the last RESETLOG time.


Example commands :

$ rman catalog rman/rman@rclone

RMAN> list incarnation;
      set dbid <dbid before the resetlog time>
      connect target un/pw@<alias>
      reset database to incarnation 2;