@chemistontheroad inquiry form aracılığıyla belli aralıklarla durumun ne aşamada olduğu sorulabilir, ben bir defa yazmıştım, kısa süre içinde yanıt verdiler:
"We will notify the petitioner, principal applicant and attorney of record when this petition is eligible for further processing.
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We sent that information (either by physical mail or email) as part of your first Welcome Letter.
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If your visa petition is currently processing at the National Visa Center, do not let more than one year pass without contacting NVC. If a period of one year passes from the last date of contact (by telephone, mail, or e-mail) with NVC, all submitted fees and documents expire. If this occurs, the fees must be paid again and documents must be resubmitted in order to continue the immigration process.
DO NOT mail original documents to the National Visa Center. You will need to bring these to your visa interview at the U.S Embassy or Consulate. "
Demek ki bize gönderilen Case Number ve Invoice ID Number içeren bilgilendirme, welcome letter benzeri idi. NVC'ye ödemenin aktif olması için bulleten'de tarihlerin ilerlemesini bekleyeceğiz.