The documents which are needed to be attached can be given as follows: A copy of the confirmed booking of the flight ticket to your final destination must be attached along with the form. A picture of the applicant which follows all the passport picture based criteria must be provided. A travel document that has a validity of six months or more it can be an ID card or even a passport. Once you confirm having all of the wanted documents you can attach then along with the form and submit it to get the transit visa supplied to you.