How to get XML file of my IT return for rectification?

How to generate X.M.L?

Step 1.Go to https://incometaxindiaefiling.gov.in and click on login here.

Step 2.Select the “View Returns/ Forms” option to see e-filed tax returns.

Step 3.Click on the acknowledgment number to download your ITR-V. 

You could also choose to e-verify your income tax return. To e-verify, select the option “Click here to view your returns pending for e-verification”.

Step 4.Select XML to begin the download.

Step 5.After downloading, enter the password to open the document.  The password is your PAN number in lower letters along with date of birth.

Example:
PAN: AAAPA1231F
Date of Birth: 01/01/1980
Password: aaapa1231f01011980