An Acknowledgment of Receipt (AOR) is an official letter that IRCC sends you confirming they have received your application and will start processing it. Aor is an official letter that the ircc sends you confirming they have received your application and will start processing it.Begin with a professional letterhead or logo. If we start processing your application, we'll send you an acknowledgement of receipt letter or email with an application number. AOR means "Acknowledgement of Receipt" meaning a letter that they send stating they have received the application. Form Letter - Acknowledgement of Receipt of Your Request ( August 2005) (declared obsolete). The definitions, which also appear in part 772 of the EAR, are set out here for your convenience to assist you in filling out your application correctly. For a copy of your receipt on a completed rental, please click here. To view Tesla Supercharging fees use our Get Receipt tool and open "EV Charging Costs.