Your example should be corrected like such:

%$err_info =(
        CMD     => 'Command Execution Failed',
        STATUS  => 'Status Check Failed',
        SUCCESS => 'Command Succeful upto',
        TIME    => 'scalar localtime()',
        );
[download]

but this is indeed simpler:

$err_info ={
        CMD     => 'Command Execution Failed',
        STATUS  => 'Status Check Failed',
        SUCCESS => 'Command Succeful upto',
        TIME    => 'scalar localtime()',
        };
[download]