# Include our headers in your requests

Personio introduces a set of headers that you should include in your requests, so that we can understand the **usage of your integration**.  This can help us **understand your requirements and needs** in order to provide more features and add value to our API. Headers enable **quicker debugging and account-specific** issue resolution.

It is **very strongly recommended** that headers be included on every incoming request to our API.

The **values for the X-Personio-Partner-ID and X-Personio-App-ID can be defined by you**, but should represent your company name and application name.

For Marketplace integration partners:\
Personio **very strongly recommends** that you pass an acceptable value for both the X-Personio-Partner-ID and the X-Personio-App-ID headers in your requests.

For customers:\
Personio **very strongly recommends** that you pass an acceptable value for the X-Personio-App-ID only. **Do note that without headers we may be unable to troubleshoot and/or support API-related queries**

| Header                | Description                                               | Example                     |
| :-------------------- | :-------------------------------------------------------- | :-------------------------- |
| X-Personio-Partner-ID | The partner identifier                                    | X-Personio-Partner-ID: ACME |
| X-Personio-App-ID     | The application identifier that integrates with Personio. | X-Personio-App-ID: SLACK    |

Values **MUST** **follow** the **UPPER\_SNAKE\_CASE** format. For example *MY\_APPLICATION*, *ACME* are valid values.

**TIPS**: Please make sure you keep those values consistent across your requests and thereby enable quicker issue resolution