Oracle Error Message
RMAN-05507: standby control file checkpoint (string) is more recent than duplication point-in-time (string)
Reason for the Error
A DUPLICATE FOR STANDBY command was issued, but the checkpoint of the control file is more recent than the last archived log or the specified point-in-time.
Solution
If an explicit point-in-time was specified, change it to be at least the control file checkpoint; otherwise archive (and backup/copy) the current log.