Regulations Governing the Use of Uniform Invoices Article 19

Business entities omitting the issuance of uniform invoices or issuing them in lower amounts, if found, shall immediately issue remedy invoices to the correct amount with “corrections for violation of the Act” indicated in the remarks column of such remedy invoices and shall submit them to the competent tax authority for recordation or further processing.For business entities omitting uniform invoice issuance or issuing invoices in lower amounts as described in the preceding paragraph, if found through purchaser’s report, the remedy invoices thus issued may be delivered to the purchaser without specifying “corrections for violation of the Act” in the remarks column of such invoices. The business entities however shall provide a letter of undertaking admitting their violation of the rules of uniform invoice use.
中文原文 統一發票使用辦法第19條
營業人漏開、短開統一發票經查獲者,應補開統一發票,並於備註欄載明「違章補開」字樣,由主管稽徵機關執存核辦。
前項漏開、短開統一發票之行為,如經買受人檢舉查獲者,其補開之統一發票,得交付買受人,並毋須在備註欄書明「違章補開」字樣,另由該營業人切結承認其違章事實。

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