Silent said:
It is obvious that Application number is generated first. Then documents are checked based on which CC/BD charged and another number generated(UCI or file number). Then final eligibility check and sending of PER to candidate by generating another number. My curiosity is which is generated first UCI number of file number ? :'( Comments Please.
Identification Number
Each identification type will have its own unique identification number. To find this number on your correspondence or official document(s), refer to the identification type below for assistance in locating the identification number.
Client ID Number
You will find this number on official documents issued to you from a Citizenship and Immigration Canada office, Case Processing Centre or visa office where you submitted your application. Your "Client ID Number" has four numbers, a dash (-), and four more numbers. (Example: 0000-0000).
Immigration File Number
You will find this number on any official document issued to you from the visa office where you submitted your application. Your "Immigration File Number" starts with the letter "B", and is followed by nine numbers. (Example: B000000000).
Citizenship File Number
You will find this number on all correspondence (except for the initial acknowledgement letter) mailed to you by the Case Processing Centre in Sydney or by the local Citizenship and Immigration Canada office processing your application. This number is all digits. (Example: 0000000).
Permanent Resident Card number
Your "Permanent Resident Card" number is located in the top left corner on the back of your card. The "Permanent Resident Card" number will begin with two letters followed by 10 numbers. (Example: RA0302123456).
Receipt Number
You will find this number on the acknowledgement letter that Citizenship and Immigration Canada sent to you. This number is all digits (Example: 000).
Receipt Number (IMM 5401)
You will find this number on the document that was filled out and stamped when you paid your fees at a financial institution or on the official receipt you obtained when you paid your fees on the Internet. Your "Receipt Number (IMM 5401)" starts with a letter, followed by nine numbers. (Example: B000000000).
Receipt Number (IMM 5401)
You will find this number on the document that was filled out and stamped when you paid your fees at a financial institution or on the official receipt you obtained when you paid your fees on the Internet. Your "Receipt Number (IMM 5401)" starts with a letter, followed by nine numbers. (Example: B000000000).
Record of Landing (IMM 1000) number
You will find this number in the "remarks" section on the bottom right of the Record of Landing document issued to you by a Citizenship and Immigration Canada office or by the visa office where you submitted your application. Your Record of Landing number starts with a "W" followed by nine numbers. (Example: W 000 000 000).
Confirmation of Permanent Residence number (IMM 5292 or 5509)
You will find this number in top right corner of your Confirmation of Permanent Residence document issued to you by a Citizenship and Immigration Canada office or by the visa office where you submitted your application. Your Confirmation of Permanent Residence number starts with a "T" followed by nine numbers. (Example: T100000000).
https://services3.cic.gc.ca/ecas/redir.do?redir=id_num
Update- Aug 2010