When you want to send your citizenship application at first, one of the required documents to include in your application is a original police certificate for each country that you have been for a total of 183 or more in the 4 years immediately before the date of your application. One of these countries is definitely Canada itself. So, you need a police certificate with finger print from Canada to include in your application when you send it at first.
I meant you already included the police certificate with finger print from Canada in your application when you send it at first, but you still got a fingerprint request letter after the test for a new fingerprint?
Thanks