558- تنص المادة 2 من البروتوكول الاختياري على أن "للأفراد الذي يدعون أن أي حق من حقوقهم المذكورة في العهد قد انتهك، والذين يكونون قد استنفدوا جميع طرق الانتصاف المحلية المتاحة، تقديم رسالة كتابية إلى اللجنة لتنظر فيها".
Although an author does not need to prove the alleged violation at the admissibility stage, he must submit sufficient evidence substantiating his allegation for purposes of admissibility. A “claim” is, therefore, not just an allegation, but an allegation supported by a certain amount of substantiating evidence. In cases where the Committee finds that the author has failed to substantiate a claim for purposes of admissibility, the Committee has held the communication inadmissible, in accordance with rule 90 (b) of its rules of procedure.