A document that is not a copy. Sometimes the regulations allow you to submit a copy of the document instead of the original, but then the copy should be certified (confirmed to be true to the original). A copy of the document may be authenticated by an employee of the office that accepts the document, then it is stamped and signed accordingly. Authentication can also be performed by, for example, a notary public, as well as a legal adviser/lawyer, if he is yours proxy.
