Yeah, again with the whole nonsense thing.
I assume you want to say: 'I need to put my UAC number on my scholarship applications, however I won't have it by their due date'?
In which case, you obviously need to contact either a) UAC to see whether you can get the number early, and give them your reason, or b) the institution to which you're applying for the scholarship.
Pretty straightforward, imo. I wouldn't trust anybody on the blogosphere with this info anyway, so I'm sure you would have double-checked, and thus made your whole thread pointless.