---
metadata:
  - name: generator
    content: Diplodoc Platform v5.50.6
alternate:
  - https://yandex.com/dev/direct/doc/en/objects/adextension.md
  - https://yandex.com/dev/direct/doc/ru/objects/adextension.md
sourcePath: en/dg/objects/adextension.md
---
> **Documentation Index:** Fetch the complete configuration index at https://yandex.com/dev/direct/doc/en/llms.txt

# Extension (AdExtension)

Only one type of extension is currently supported, the callout.

A callout contains additional text for the ad. For more information, see [Callouts](https://yandex.com/support/direct/efficiency/callout.html) in the Help for Yandex.Direct.

You can assign up to 50 callouts to an ad.  When the ad is displayed, it shows all the callouts that fit in a single line (66 characters).  You can assign the same callout to multiple ads.


## Servicing{#service}

Use the [AdExtensions](https://yandex.com/dev/direct/doc/adextensions/adextensions.html) service for creating extensions.

Extensions can't be edited.  If you need to change an extension for an ad, create a new extension and assign it to the ad, then unassign the previous extension.

To assign an extension to an ad or unassign one from an ad, use the [Ads](https://yandex.com/dev/direct/doc/ads/ads.html) service. See [Ad extensions](https://yandex.com/dev/direct/doc/en/best-practice/launch-campaign.md#harness).

You can delete an extension only if it is not assigned to any ads. To get a list of ads that a particular extension is assigned to, use the [Ads](https://yandex.com/dev/direct/doc/ads/ads.html) service.


## Status of an extension{#status}

The `Status` parameter reflects the result of reviewing the extension.


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**Status**
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**Description**
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DRAFT
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The extension has been created but has not yet been submitted for review.
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MODERATION
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The extension is under review.
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ACCEPTED
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The extension was accepted after review.
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REJECTED
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The extension was rejected after review.
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UNKNOWN
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The status is unknown. This value is used for backward compatibility and for displaying statuses that are not supported in this version of the API.
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|#


## State of an extension{#state}

The `State` parameter reflects the current state of the extension.


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**Status**
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**Description**
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ON
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The extension can be displayed.
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DELETED
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The owner deleted the extension.


{% note info %}

The [get](https://yandex.com/dev/direct/doc/adextensions/get.html) method returns an extension in the DELETED state only if the `States` parameter is set to DELETED or the ID of this extension is specified in the `Ids` parameter. If the `Ids` and `States` parameters are both omitted, the method doesn't return extensions in the DELETED state.

{% endnote %}
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UNKNOWN
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The status is unknown. Used for providing backward compatibility and displaying states that are not supported in this version of the API.
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|#