你的成绩不会被voiding，你需要做的是发邮件给CFAI，report CFAI你的情况和考试时以上问题和你个人资料相关的详细，如：您的姓名，Candidate Number ID，证件号码，等等尽可能详细的信息。

CFAI Email：info@cfainstitute.org

还好不是座位坐错

楼主放心吧，去看一下官网的说明吧http://www.cfainstitute.org/cfaprog/resources/examdetails/after_exam_questions.html

After the Exam FAQs

I wrote in the margins of my essay answer sheet. Will this cause problems with scoring my exam?

Writing answers in the margin will not affect your scores. All of your written text recorded on answer pages for each specific question is the only text that will be graded.

What about stray marks I may have made on my item set or multiple choice answer sheet? 

We are aware that candidates often change their answers, which can create stray or erasure marks. Each answer sheet is reviewed to ensure answers are recorded by our system appropriately.

What if I did not complete my candidate number?

Our experienced grading staff carefully reviews each answer sheet for completeness. A staff member will complete your candidate number to ensure your scores are recorded correctly. 

Or my name?

We primarily use your candidate number as an identifier during the scan sheet grading process; we only use names for reference when someone has written his or her candidate number incorrectly. 

Will my using a pen cause a problem with scoring my exam?

While we prefer to have multiple choice/item set answer sheets completed in pencil, our electronic scanner will recognize most types of ink. If the scanner doesn’t recognize an ink mark, an experienced operator will review the answer sheet to ensure answers are recorded by our system appropriately.

What if I didn’t sign the exam pledge?

We will notify you if you did not sign the Candidate Pledge. You will be given another opportunity to read and sign the pledge so that your examination can be graded.

打车同问，比楼主更晕

我直接就忘记写candidate number，也没有涂，该怎么办呢？