Just to clarify for the OP, this is from the CBP FAQ page:
<blockquote id="quote" class="ffs">quote:Information about your passport- such as the expiration date or passport number, biometric information - such as your name or date or country of birth is wrong.
The best way to correct that type of error is to re-apply. You should be able to make a new application if your previous application was approved. Just go into the application system and click on "Apply" button. You cannot use the update function to make a change on your passport or biometric information. If your first application was denied, you will have to wait 24 hours to reapply. Even if your previous application was approved, the system will not let you reapply until you close your browser after the first try. If you just applied, and are having difficulty changing something, try closing your connection to the Internet, and then opening it again. Once you submit a new application, the old one will automatically be voided.
If for some reason, you are unable to reapply - even after closing and re-opening your browser, click on the "Ask a Question" tab at the top of this page, and in the question box, give us the original application number, if you have it; the full name; passport number; date of birth of the applicant; contact phone number (including country code), as well as a description of what was entered incorrectly. We will cancel your application, and notify you when you can re-apply.[/quote]
The FAQ page is a VERY useful source of official information:
https://help.cbp.gov/cgi-bin/customs.cfg/php/enduser/std_alp.php?p_sid=fynv9GVj&p_accessibility=0&p_redirect=&p_lva=&p_sp=&p_li=&p_srch=