One of the biggest TROUBLE creators is the duplicate entries. Although this can be eliminated, there is no full ACCURACY possible. This is because the same information is generally available in a different format or in other sentences. The common misspelling is another major trouble creator. Also, the varying value can create a ton of issues. Moreover, VALUES that are illegal, missing and cannot be identified can enhance the chances of various errors and the same affect the quality up to a GREAT extent. 

One of the biggest trouble creators is the duplicate entries. Although this can be eliminated, there is no full accuracy possible. This is because the same information is generally available in a different format or in other sentences. The common misspelling is another major trouble creator. Also, the varying value can create a ton of issues. Moreover, values that are illegal, missing and cannot be identified can enhance the chances of various errors and the same affect the quality up to a great extent.