Oracle Message RMAN-00558 - error encountered while parsing input commands

ERRORerror encountered while parsing input commands
CAUSEThe parser detected a syntax error.
ACTIONThis message should be accompanied by other error message(s) indicating the cause of the error.

533613Errors when backing up with Oracle Recovery Manager
1585727Syntax error in the "keep" option with RMAN call
981371Backup of archive log files fails with RMAN-01009