The most important point of an AOR is it's an acknowledgement of the receipt of your application. Aor is an official letter that the ircc sends you confirming they have received your application and will start processing it.I submitted my PGWP application about an hour ago and received a submission confirmation letter. Is this the same thing as an AoR? If we start processing your application, we'll send you an acknowledgement of receipt letter or email with an application number. An Acknowledgment of Receipt (AOR) is an official document that confirms that IRCC has received your application.