> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/kalipso5/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.sysdevmobile.com/kalipso5/developing/form/actions/actions-description/group-communications/push-notification-get-client-id.md).

# Push Notification Get Client ID

Retrieves the ID for this application in the current device to be used for push notifications.

Action available for the following operating systems:

![](/files/kfMeq0OanEe5OOx5RmUn)

### Parameters

* **Target** - The control or variable to save the client ID.

{% hint style="info" %}
In order for push notifications to become available you need to select the option **Enable Push Notifications** in the project properties
{% endhint %}

{% hint style="info" %}
If you register your application to receive push notifications, you will need to call this on your application to retrieve the current **client ID**. Normally you will have to inform your server/backoffice of your ID so that your it can send push notification messages to the device.
{% endhint %}

{% hint style="info" %}
This client ID can be refreshed by the operating system from time to time, so it is good practice to always query for this value when your application starts, compare it to the previous value, and if it has changed you need to re-send this new ID to your server/backoffice.
{% endhint %}

{% hint style="info" %}
The format of this ID and how it can be used by your server/backoffice to send the notifications, is system dependent. So you should also inform the server/backoffice of the platform associated with this ID (Android/Windows 10), if you have deployed to multiple platforms, so it can send the appropriate push notification.
{% endhint %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://doc.sysdevmobile.com/kalipso5/developing/form/actions/actions-description/group-communications/push-notification-get-client-id.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.