Yes, it’s correct! Do in that wayHi, yes it asks for all the details you have listed but it doesn't matter because you are uploading a request for extension. What i did was this, i uploaded my letter with supporting documents (Fingerprinting receipts and email from RCMP that it is still under processing). My issue date was the date i submitted and expiry date was a month later, document name was RCMP request deadline extension and Document number was 000000, i did all of this and within a week got a 1 month extension.
Best of luck!