Mistake in mentioning tan of 2 deductors for ay 12-13

Hello All,

It is humbly requested to provide proper advice on my situation, explained below:

I have filed ITR-1 on 14-06-12 for AY 12-13 (before end date), and after one year from filing ITR-1, I recently received intimitation under 143(1) that demand is determined.

I closely looked at my own case and found that in my ITR-1, I should have mentioned 2 TAN of my deductors (as I have worked in 2 companies in that FY), mistake from my end was that I added the total income of both the deductors and filed with total dax deducted against the name of my latest employer.

I corrected the mistake by going onto the online tax filing website-->Went to My account section--> Raised a rectification request --> now added both the TAN of two deductors --> submitted it. Now my questions are as follows:

1) Will the income tax deptt. understand and automatically correct the data and send me a new correct intimation under 143(1)?

2) Do I need to ask for rectification order under sec.154? If I do this then will the IT deptt. consider my already made rectification request and send new IT calc. intimation.

3) Is the rectification order under sec.154, a final order of demand/refund? and after this no change is possible in IT calc.?

Thanks in advance,

Mayank