Oracle Error Message
RMAN-05013: auxiliary control file name string conflicts with a file used by the target database
Reason for the Error
RMAN is attempting to use the specified control file name for Tablespace Point-in-Time Recovery as a restore destination in the auxiliary database, but this name is already in use by the target database.
Solution
Set control_files parameter in the auxiliary instance to a name that does not conflict with a file name in use by the target database.