RC

RC stand for Return Code or "exit status"; this may be referred to as an errorlevel.

The RC of a process in computer programming is a small number passed from a child process (or callee) to a parent process (or caller) when it has finished executing a specific procedure or delegated task.

In other words the number (RC) indicates if the program, data processing or so has finished without problem or if any problem, which kind of problem and where it might happen.

Links

 * Return Code or Exit Status