# Delete authorization

In this case study, we will look at how to remove authorization (user) on a modem.

To remove the authorization (user) on the modem perform the following actions:

1. We will need a unique authorization identifier, which we can [`get here`](https://docs.proxy-seller.com/mobile-crm/usage-guides/modem-authorization-users/modem-authorizations).
2. Use the following method from our API [`Delete modem authorization by Id`](https://docs.proxy-seller.com/api-reference/modem-authorization#delete-modem-authorization-by-id)

{% hint style="info" %}
Authorization can be either by login and password or by IP, specify the type you need and valid data according to the type.
{% endhint %}

Example of successful execution of a request in JSON format:

```json
true
```