I signed up for the college board and I accidentally forgot to put my second last name, I was starting to fill out my SAT registration when I realized that. I used to live and the US and my high school transcripts there have only my 1st last name while the school I’m going to currently (outside the US) has both my last names. And on my passport it has both my last names. So should I call customer service and change it or just leave it like that? Thanks
Calling is definitely a good idea. I would imagine that this may be a problem (as they are very strict) and anyway, better safe than sorry, right? 
Yeah you’re probably right, thank you 