how do you add DeCals with CEC?!?

<p>I can’t figure it out, I got the CEC from my DeCal instructor but what do I do with it?? When I enter it in Telebears in CEC section it give me ‘the prior transaction has been canceled’ … ugh, please some help : (</p>

<p>thank you.</p>

<p>you enter the course control number as well as the CEC, right?</p>