> ## Documentation Index
> Fetch the complete documentation index at: https://docs.adrop.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Managing Ad Units

> Guide on how to modify or delete created Ad Units.

<Warning title="Check Before Modifying">
  Modifying Ad Units can affect running campaigns and Ad Products. Popup ads in particular are reflected immediately upon modification, requiring caution. When possible, we recommend modifying when there are no campaigns or creating new units.
</Warning>

***

## Modifying

### Modification Process

<Steps>
  <Step title="Select Unit">
    Select the unit to modify from the **Ad Units** menu.
  </Step>

  <Step title="Open Modification Menu">
    Click the **\[...]** button at the top right of the detail page and select **Modify Unit**.
  </Step>

  <Step title="Change Settings">
    Change settings and click **Save**.
  </Step>
</Steps>

### Modifiable Items

| Item                        | Modifiable  | Notes                                                     |
| --------------------------- | ----------- | --------------------------------------------------------- |
| **Unit Name**               | O           |                                                           |
| **Format-specific Options** | O           |                                                           |
| **Dark Mode Support**       | O           |                                                           |
| **Formats**                 | Conditional | If before SDK integration and not included in Ad Products |
| **Size**                    | Conditional | If before SDK integration and not included in Ad Products |
| **Ad Unit ID**              | X           |                                                           |

### Campaign Reflection Timing

<Warning title="Reflection timing varies by format">
  | Formats                                            | Reflection Timing                              |
  | -------------------------------------------------- | ---------------------------------------------- |
  | **Popup**                                          | **Immediately reflected** in running campaigns |
  | **Banner, Interstitial, Rewarded, Native, Splash** | **Reflected from new campaigns**               |

  Popup ads are applied immediately to running campaigns upon modification, requiring caution.
</Warning>

### Modification Cautions

* **Format/Size Modification Restrictions**: Units integrated with SDK or included in Ad Products cannot change format and size.
* **Dark Mode Activation**: Running campaigns will display light mode creatives.

***

## Deleting

### Deletion Process

<Steps>
  <Step title="Select Unit">
    Select the unit to delete from the **Ad Units** menu.
  </Step>

  <Step title="Open Deletion Menu">
    Click the **\[...]** button at the top right of the detail page and select **Delete Unit**.
  </Step>

  <Step title="Confirm Deletion">
    Enter the unit name to confirm deletion.
  </Step>
</Steps>

### Deletion Cautions

* Deleted Ad Units **cannot be recovered**.
* Ad Units included in running campaigns cannot be deleted. End the Campaign first.
* Past report data for that unit is retained even after deletion.
* Ads will not display if requests are made with a deleted Ad Unit ID.

***

## Next Steps

<Card title="Maximize Revenue with Backfill" icon="chart-line" href="/ad-unit/backfill">
  Check how to monetize empty inventory.
</Card>

***

## FAQ

<AccordionGroup>
  <Accordion title="I want to change format or size but modification won't work">
    Units integrated with SDK or included in Ad Products cannot change format and size. We recommend creating a new unit and gradually transitioning.
  </Accordion>

  <Accordion title="I modified a unit but it's not reflected in running campaigns">
    Formats other than Popup are not immediately reflected in running campaigns. Modifications apply from newly created campaigns.
  </Accordion>

  <Accordion title="After modifying a unit, the product doesn't appear when booking campaigns">
    If the unit's format or size doesn't match conditions set in the Ad Product, that product won't appear in the Campaign Booking list. Check creative set conditions in Ad Product settings.
  </Accordion>

  <Accordion title="Does deleting a unit affect existing campaigns?">
    There is no impact on already created campaigns. After deletion, new campaigns cannot be booked with products that included that unit.
  </Accordion>
</AccordionGroup>