Kupata letter of notification from green card lottery siyo guarantee kwamba utapata visa/green card. Hiyo ni only first step on your way to (possibly) being issued a green card. Kuna vigezo kadhaa ambavyo ni decisive as to whether you'll eventually qualify for a green card, kama vile rank number, results of medical check-up, criminal record(s), financial ability na level of education. One could "win" the green card lottery but ultimately become disqualified because of failure to meet any of these crucial requirements.