Have you read that linked document? Starting on page 1-11 in the section labeled "HINTS" there is block labeled "Remove duplicate rows", another block labeled "clean the Claim_site column", another "clean the Disposition column" , yet another labeled "clean the Claim_type column".
Ask more questions when you have finished reading the entire document and show us what code you have attempted that failed. If code creates errors be prepared to copy the Log messages from your log and paste into text box on the forum opened with the </> icon above the message window.