> For the complete documentation index, see [llms.txt](https://docs.docbits.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.docbits.com/chinese/zui-zhong-yong-hu-yu-he-zuo-huo-ban/end-user-section/validation-screen/automatic-checks-on-the-validation-screen.md).

# 验证屏幕上的自动检查

## 概述

默认情况下，字段验证流程中的特定字段会根据其他提取值计算出的公式，自动检查其值。本页介绍这些自动计算所使用的公式。

将鼠标悬停在信息图标上，即可随时查看所用公式。

<figure><img src="https://1870485400-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlPczlNw8zzYNLfjfispX%2Fuploads%2Fgit-blob-7915802bf428ebd0f8a9b77a03781dfe1903552c%2Fautomatic_checks_1%20(1).png?alt=media" alt=""><figcaption></figcaption></figure>

<mark style="color:red;">**注意：**</mark> 只有在相应字段已提取出值时，才会显示信息图标。

## 自动检查公式：

### 净额：

```
Net amount = Tax amount * 100 / Vat rate 
```

### 增值税税率：

```
Vat rate = Tax amount * 100 / Net amount 
```

### 税额：

```
Tax amount = Net amount + Vat rate / 100
```

### 优惠税率净额：

```
Net amount reduced = Reduced Tax amount * 100 / Vat rate reduced
```

### 优惠税率增值税税率：

```
Vat rate reduced = Reduced Tax amount * 100 / Net amount reduced
```

### 优惠税率税额：

```
Tax amount reduced = Reduced Tax amount + Vat rate reduced / 100
```

### 净额合计：

```
Total net amount = Net amount + Reduced Tax amount + Net amount free
```

### 净额合计（美国）：

```
Total net amount US = Net amount + Shipping charges + Misc. charges + Additional amount
```

### 税额合计：

```
Total tax amount = Tax amount + Reduced Tax amount + Tax amount free 
```

### 总金额：

```
Total amount = Net amount + Tax Amount
```

<mark style="color:red;">**注意：**</mark> 如果提取值与验证后的值不匹配，则无法继续处理该文档。相应字段会显示 **Amounts Mismatch**（金额不匹配）错误。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

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

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.docbits.com/chinese/zui-zhong-yong-hu-yu-he-zuo-huo-ban/end-user-section/validation-screen/automatic-checks-on-the-validation-screen.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

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.