Message Oracle RMAN-05001 - auxiliary file name string conflicts with a file used by the target database

ERRORauxiliary file name string conflicts with a file used by the target database
CAUSERMAN is attempting to use the specified file name as a restore destination in the auxiliary database, but this name is already in use by the target database.
ACTIONUse the CONFIGURE AUXNAME command to specify a name for the data file that does not conflict with a file name in use by the target db.