The Enforcement Rules of the Specifically Selected Goods and Services Tax Act Article 32

With respect to a specifically selected good exempt from the specifically selected goods and services tax pursuant to Article 6 of the Act, if for any reason the relevant evidentiary documentation is incomplete, the taxpayer may first pay the tax for the release of goods from the factory or for importation, and at a later date submit relevant documentary evidence to the competent tax authority of the location of the factory or the customs authority for a refund of the taxes.
中文原文 特種貨物及勞務稅條例施行細則第32條
依本條例第六條規定免徵特種貨物及勞務稅之特種貨物,如因故無法備齊相關證明文件,得先行繳納稅款出廠或進口,嗣後檢具相關證明文件向工廠所在地主管稽徵機關或海關辦理退還原納稅款。

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