No canceling the slot will no invalidate your voucher..at least that was the rule when i gave the
SCJP exam and as far as i know that rule has not changed , but to be on the safe side why don't you check out with the center at which you giving the exam they know the latest rules..
[ December 23, 2007: Message edited by: abhishek pendkay ]
The significant problems we face cannot be solved by the same level of thinking which created them – Einstein
SCJP 1.5, SCWCD, SCBCD in the making