Two application numbers (NBC....) for one N400 Application?

G

guju

Registered Users (C)
I was looking at my girlfriend's I-797C and there is an application number on the top of the page NBC*000... and then towards the bottom of the page there is USCIS office address and the last line is attention N-400 Naturalization Applications and then there is another number NBC$000...
These two numbers are different. I checked my girlfriend's sister's I-797C as well and same thing is on her application. Then I got home and checked my I-797C and same things as well. The NBC*000 on the top is different from NBC$000... (notice the * and $ difference as well).

When I queried the NBC$000... online I got an error saying that the number is invalid, so I replaced $ with * and did the query again and got a status that is different than the status I get when I use the NBC* number on the top.

In my case
Status check with my application number NBC*000... (located on the top of I-797C) says send RFE. However, when I do a status check on the NBC$000... (located on the bottom of I-797C) and with replacing $ with *, I get a status that it has been sent for standard interview.

I am guessing that the bottom NBC$ is some other tracking number used by USCIS, and when I replace the $ with *, I am actually checking someone else's case status :confused:.

Any thoughts?
 
I just checked my case receipt and I have two different numbers too. If I try the bottom number with $ sign, it gives error but if I try with * sign, it says the N-400 was transferred to local office for interview on Sep 03rd 2009 itself. I wish it is true :) :) but I don't think that is the case number. The one on the top is actual application number. Don't know what that number at the bottom of the receipt is. It is better to leave it at that rather than reading too much into it.
 
The top number is the official receipt number used to track your case whereas the one on bottom is the one created for initial receipt (same used on cashed check).
 
I was told by IO that the one with dollar sign is for USCIS used for tracking the application payment, so don't worry about that one.
 
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