I believe that accuracy is the best virtue without which it will be impossible to provide quality work. Since many decisions are based on the information punched by data entry clerks, it is important that data quality is maintained.
I ensure accuracy at each point. When I punch in information, I make sure that I read it at least three times before typing it. Once I am done entering a module, I revisit it and compare it to the original to make sure that I have indeed punched in correct information.