父母绿卡请教8老师

父母的case从nbc去了nyc。

现在nyc让补体检 因为已经过期。我们已经寄去了。议员帮问了 收到回答如下

“Please be advised that the applicant’s Form I-485, Application to Register Permanent Residence or Adjust Status MSCxxx is pending review.

Please be advised that once your response to the Request for Evidence is received and Service records is updated the applicant will be notified by mail.”

什么是service record呢？谢谢8老师！