Regulations for Early Discharge of Substitutive Services Draftees Article 5

The competent authority shall make discharge certificate for the serviceman who is ratified to discharge earlier. On thevalid day of discharge, the certificate is issued by responsible agency.
中文原文 替代役役男提前退役辦法第5條
經核定提前退役之役男,主管機關應製作退役證明書,於退役生效日時,由需用機關轉發。

English translation for reference only; the Chinese text prevails. Not legal advice.