The Enforcement Rules of the Prison Act Article 9

Admission of a prisoner without execution writ shall be rejected; if the judgment or other required document is missing, a notice for supplemental submission may be given.
中文原文 監獄行刑法施行細則第9條
受刑人入監時,無指揮書者,應拒絕收監;裁判書及其他應備文件有欠缺時,得通知補正。

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