SAT after deferral?

<p>Hi! So I was deferred and I was recommended to take a Subject SAT in January. When I applied, I didn't say on the common app that I was gonna take another SAT since I wasn't planning on it. Should I contact Columbia and let them know that I'll be taking it in January? If so, should I contact my regional admissions officer?</p>

<p>Thanks</p>