我是国内本科学历，我申请时提交了毕业证学位证的原件和学校出的中英文认证及成绩单，EA要求补料的内容如下，这种情况应该补什么材料呢？谢谢。
We can not verify the provided education record, can you please request and provide the reference letter from the university on official letterhead stating your name and student number, the name of the programme that you compleated and the duration of the study. The letter must be valid for the phone verification. Please make sure that the verifier can be reached through the general school reception phone line listed on your engineering school website.