> For the complete documentation index, see [llms.txt](https://docs.truecaller.com/truecaller-for-business/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.truecaller.com/truecaller-for-business/verified-campaigns/api-webhook-documentation/campaign-payload/caller-id.md).

# Caller ID

Display your campaign when users receive calls from your verified number, ensuring high visibility and engagement. This touchpoint allows you to present important messages directly during incoming calls, enhancing user awareness of your brand 

{% hint style="info" %}
To create the JSON payload structure needed for your webhook connectors, use the DIY Template Generator tool within the Verified Campaigns tab on the Truecaller for Business console. The tool helps you to create the appropriate template in two simple steps. 
{% endhint %}

**Below are the required payload parameters for each Template Style on the Caller ID screen :**

**profile** section parameters are **Mandatory** for all webhook payloads :

* **campaign\_id** : External campaign reference ID
* **receiver\_number** : Phone numbers of the end user to whom the communication should be delivered.

**content** section parameters can vary based on display\_unit and template\_style selected as follows : *\* means mandatory*

| Template 1 - Text only | Template 2 - Image Banner only | Template 3 - Personalised content with image banner on left | Template 4 - Personalised content with image banner on right |
| ---------------------- | ------------------------------ | ----------------------------------------------------------- | ------------------------------------------------------------ |
| “display\_unit”\*      | “display\_unit”\*              | “display\_unit”\*                                           | “display\_unit”\*                                            |
| "title"\*              | "ttl"                          | "title"\*                                                   | "title"\*                                                    |
| "sub\_title"\*         |                                | "sub\_title"\*                                              | "sub\_title"\*                                               |
| "ttl"                  |                                | "ttl"                                                       | "ttl"                                                        |


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