# bol ads preview

The Preview tab displays the state of your ads after running the bol. Ads Channel. This feature lets you preview your changes without applying them to bol. Ads, so you can review and refine your setup before creating the actual Ads on bol.

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Depending on your campaign type, the data in the preview tab is organized into:

* Campaigns
* Ad groups
* Ads
* Keywords (only manual targeting campaigns)
* Negative keywords

{% hint style="info" %}
Note I: Running "reload preview" refreshes all campaign generators. We fetch information from bol to complete this process. Although this is usually fast, it could take up to a few minutes.
{% endhint %}

{% hint style="info" %}
Note II: The preview will not take into account the automation rules that will be applied.
{% endhint %}

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### Filters

You can filter a selected entity (campaign or ad group) by clicking on the name of the entity in the preview overview. Clicking the entity name shows the child-entity page filtered on that specific entity. For example, if you click on a campaign, you go to the ad group view filtered by that campaign.

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### Search

You can use the search box to enter a text filter that will match any of the entities.

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### Campaign generator

You can choose to see all entities for one campaign generator.

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### Filter based on status or error

You can choose to only see entities with errors.

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### Errors

To see more details on an error, click the error label. This opens a pop-up with more information.

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