# 13.001 作廢發票的處理？

B2C的發票還是建議請客戶寄回，避免發票中獎，有兌獎時企業要自付損失，例如A客戶銷退商品，發票作廢後，發票有中獎，拿去兌獎了，這樣就要由營業人負擔這筆中獎金額，故在退款給客戶之前，還是應請客戶將發票寄回，公司收到發票後蓋印作廢章留抵，再從系統建立銷貨退回單，並上傳作廢資料喲。

![](/files/-LMphrEgxSJ4G6t_B_tX)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.a1erp.digiwin.com/a1faq/12.-gong-yong-she-ding/13.001-zuo-piao-de-li.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
