# References

### Error Message Language

By default, error messages returned by service APIs are in English. You can change the language by setting the 'lang' field in the Service API request. Below are the languages currently supported:

| Language | Code |
| -------- | ---- |
| English  | en   |
| Arabic   | ar   |

### Document Types

Some service APIs require you to provide a document type in each request. The following are the available document types for each service API

| Service         | Document Type        | Code     |
| --------------- | -------------------- | -------- |
| Data Extraction | Egyptian National ID | egy\_nid |
|                 |                      |          |
| Sanction List   | Egyptian National ID | egy\_nid |
|                 | Passport             | passport |

### Sanction List Types

The following table lists the sanction lists available through our service:

| Sanction List Type    | Code |
| --------------------- | ---- |
| Central Bank of Egypt | cbe  |


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# 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://valify.gitbook.io/documentation/references.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.