As always, you must be professional. Whatever you write very well may become part of your application.
First, here’s an example of how NOT to write (and yes, I may exaggerate for effect):
First email at 12:14 PM:
*oh hai i made a mistake on my application, so can you fix it for me? my sat is actually 1920, not 1290. okay thanx.
Second email at 2:17 PM:
*oh hai, i forgot, my name is my full name. kthxbye!!!111
I hope that that communication is obviously wrong. If it’s not, please, let’s have a talk! Or talk to someone who has experience with writing for help (such as an English teacher or someone who has a professional job).
This is a better version of the email:
Dear Admissions Officer,
Unfortunately, I recorded some information incorrectly on my Common App. I tried to update it myself, but it’s locked, and I can’t make the change myself. I checked your site’s FAQ, and it said I should email you with corrections. My SAT score is 1920. The score of 1290 is incorrect.
Thanks in advance for your assistance .
My Full Name
Obviously, if you’re going to use this email, please use this as a template only. In other words, don’t just copy and paste this email–edit it to make it your own.