If you see this message when you try to create an account, it's because there's already an account associated with that email address. This can happen if you or someone else has already used that email address to create an account.
You need only one account to manage all your College Board activities. You won't be able to access any College Board testing activity, such as registering for the SAT, if you've already started it with another account.
If you're having trouble accessing your original account, call customer service at 866-315-6068.