Message Oracle RMAN-06757 - DB_UNIQUE_NAME string does not match target database (string)

ERRORDB_UNIQUE_NAME string does not match target database (string)
CAUSEThe value specified in the FOR DB_UNIQUE_NAME option did not match the DB_UNIQUE_NAME parameter setting of the target database.
ACTIONUse the RMAN STARTUP command, with no parameter file option, to start the target database without a parameter file, then run the RESTORE SPFILE command again.