A. which will provide them with an I-20 form. Since it acts as documentation of enrollment and eligibility for the F1 visa, this form is essmobile slots no depositential. Prior to submitting their visa application, students must pay the SEVIS fee after receiving their Form I-20. The DS-160 form, which is the Online Nonimmigrant Visa Application form that all nonimmigrant visa applicants must fill out, must then be completed by applicants.