I applied for January intake in December 12, 2019 for a Canadian university .After 20 days of applying they mailed me to send some secondary papers for their secondary investigations.I have already sent those papers through email.After 20 days of sending my mail now they are asking for a letter of acceptance from that university My question is why are they asking letter of acceptance ?and what’s my chance of getting the visa if I sent my letter of acceptance to the embassy?