> ## Documentation Index
> Fetch the complete documentation index at: https://docs.plude.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Advanced

# Advanced

## Setting the handle of customers

Handles identity a unique key for every Customer. A handle is based on a sequence counter which increases per Customer created.

Handles consist of a syntax combined with parameters, and once compiled, the parameter is replaced with the desired value, as follows:

| **parameter** | **note**         |
| ------------- | ---------------- |
| {counter}     | sequence counter |

Handles can be configured using the following snippet:

```bash theme={null}
curl -X PATCH \
     -H "Content-Type: application/json" \
     -H "Authorization: Bearer {your_token_here}" \
     -H "X-environment: {your_environment_id_here}" \
     -H "X-version: 2022-03" \
     -d '{ "customers/handle": "CUS_{counter}" }' \
     https://api.plude.io/settings/
```