What does "attested copy" mean?

In your application it is requires that your attached copies are certified to be true.

What does "attested copy" mean?

This means that another person must sign their name, print their name and provide their telephone number on each document copy you submit. This person, by signing, is attesting that the copy you submit is an exact copy of the original. A friend, relative or government official can provide this attestation for you.