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Extract the steps for linking an ad unit to a placement.
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**Source:** [Setting up Ad Units](https://tripledotstudios.atlassian.net/wiki/spaces/KB/pages/4304109569)
# Adding Ad Units to Ad Slots
To link an ad unit to a placement, follow these key steps:
## Ad Unit Linking Process
1. **Select Ad Units**
- Navigate to **Ads > Configuration**
- Choose the appropriate tab based on ad type (Banners, Interstitials, Rewarded Videos)
2. **Add Ad Units**
- Click the **[+Add]** button to create a new ad unit configuration
- Fill in required fields:
- Platform (iOS/Android)
- Ad Unit ID
- Request limit counter
- Auto retry settings
- Sequential fill options
## Ad Unit Configuration Fields
| Field | Type | Description | Requirements |
|-------|------|-------------|--------------|
| Platform | Dropdown | Select iOS or Android | Mandatory |
| Ad Unit ID | Dropdown | Unique identifier for the ad unit | Mandatory, must be pre-defined |
| Request Limit Counter | Integer | Number of ad request attempts | Default: 5 |
| Auto Retry | Boolean | Retry loading if first attempt fails | Enabled by default |
| Sequential Fill | Boolean | Enable fallback ad units | Enabled by default |
## Placement Configuration Examples
### Interstitial Placement
### Rewarded Video Placement
## Important Considerations
- You can add multiple ad units per placement
- Configure separate settings for iOS and Android
- Use predefined Ad Unit IDs from the central configuration
- Set appropriate request limits and retry mechanisms
**Pro Tip:** Always test your ad unit configurations thoroughly to ensure optimal ad delivery and user experience.