USCIS will notify the National Visa Center (NVC) your I-601A is approved. If NVC has received all required forms and documents for your immigrant visa case, NVC will schedule your immigrant visa interview at the U.S. embassy or consulate you designated before. You will be notified of your interview appointment date. You will need to abandon the United States to attend your immigrant visa interview at the designated location. If you fail to attend the visa interview, the approval may no longer be valid.