What is the meaning of 'daily value not established'?

Because we all have different caloric needs the exact "daily value" is different for each of us as well. Most labels estimate the daily value of a vitamin or mineral based on the average daily caloric intake of 2000 calories. Since caloric needs vary from person to person the amount of calories a person consumes may be more or less than 2000 calories and in turn the "daily value" may be more or less than what is estimated on the product label.