# Common Data Types

The API types **MUST** adhere to the formats defined below:

| Data type      | Standard                                                               | Example                                   |
| -------------- | ---------------------------------------------------------------------- | ----------------------------------------- |
| Date and Time  | [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601)                     | 2017-06-21T14:07:17Z (Always use UTC)     |
| Date           | [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601)                     | 2017-06-21                                |
| Duration       | [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601)                     | P3Y6M4DT12H30M5S                          |
| Time interval  | [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601)                     | 2007-03-01T13:00:00Z/2008-05-11T15:30:00Z |
| Timestamps     | [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601)                     | 2017-01-01T12:00:00Z                      |
| Language Codes | [ISO 639](https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes)       | en <-> English                            |
| Country Code   | [ISO 3166-1 alpha-2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2) | DE <-> Germany                            |
| Currency       | [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217)                     | EUR <-> Euro                              |


---

# 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://adidas.gitbook.io/api-guidelines/general-guidelines/d_data_types.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.