An Acknowledgment of Receipt (AOR) is an official letter that IRCC sends you confirming they have received your application and will start processing it. Receipt Number; A-Number (if applicable); Date when filed; Application or Petition filed; Item not received; Email Address.To submit your passport at a VAC, you will have to pay a service charge for Package Transmission, unless you submit your passport to the same VAC. Air Canada applies travel document requirements contained in IATA's Travel Information Manual, available on the IATA Travel Centre website. If we start processing your application, we'll send you an acknowledgement of receipt letter or email with an application number.