This function finds participants with similar club names. These may be actually the same club with different spelling. If a Team Score uses the club field to join participants together, they need to be spelled in the exact same way.
Click the button Compare Club Names to start the comparison and see the results. Then unify the spelling by clicking on the correct version in the list of results.
You can also define a minimum similarity two clubs need to have to show in the results and you can also run the comparison based on an Additional Field instead of the club field.