To make more informed decisions about your data sharing in demand channel settings, you can view bidder preferences for data usage.
Third-party bidders, including Authorized Buyers, Open Bidders, and SDK Bidders, can declare their preferences for data usage and bid request data.
These data usage declarations are designed to help you, as an Ad Manager publisher, make more informed decisions about your data sharing strategy.
Note that the declared preferences are for informational purposes and will not impact ad serving.
Jump to a section of the article:
- How bidder data declarations can help publishers
 - View a bidder’s data declaration preference
 - Filter bidders by data declaration preference
 - Review and update override groups
 - Find the demand channel setting for a data declaration
 
How bidder data declarations can help publishers
Knowing if data you share with bidders is received and used can help you make informed decisions for each bidder. Bidder preferences let buyers share how they use and don't use data. This results in greater transparency for publishers, helping to maintain revenue from trustworthy buyers while controlling business needs for their own user data. In addition, more opportunities for ads personalization may arise, as buyers gain access to relevant publisher data.
View a bidder’s data declaration preferences
To inform your data sharing choices, you can view a bidder’s data declarations. You can then decide if you want to update your demand channel settings for that bidder.
- Sign in to Google Ad Manager.
 - Click Delivery, then Bidders.
 - To view bidders in a demand channel, click a card, such as Go to Authorized Buyers.
Note: Data declaration is available for Authorized Buyers, Open Bidding, and SDK Bidding. For Open Bidding, the preferences only include identity signals for SSP partners. - Click a bidder’s name.
 - On the "Insights" tab, scroll down to "Data usage declarations."
 - Review the bidder’s preferences for "Data usage" and "Bid request data." Preferences may include:
    
- No declaration
 - Preferred
 - Strongly preferred
 - No preference
 
 - Bidders may also share their privacy policies to give you more context into how they use data received on bid requests. If shared, you can click the link under "Privacy policy URL" to review their policies.
 - (Optional) To update data sharing for the bidder:
    
- At the top, click Demand channel settings.
 - Under a category, such as "Publisher data sharing," turn a setting on 
or off
.
Tip: If a bidder has indicated “Strongly preferred,” you’ll notice a "Strongly preferred" label directly on the demand channel setting for that bidder. 
 
Filter bidders by data declaration preference
You can apply a filter that returns all the bidders with a specific data declaration preference. For example, to find bidders interested in secure signal sharing, you can apply the "Secure signal sharing data declaration" filter with a preference for "Preferred" or "Strongly preferred."
You can then decide if you want to update your demand channel settings for that bidder.
- Sign in to Google Ad Manager.
 - Click Delivery, and then Bidders.
 - Click a bidder card, such as Go to Authorized Buyers. 
Data declaration is available for Authorized Buyers, Open Bidding, and SDK Bidding. - Next to 
, click Add new filter, then select a filter:
- Data collection bidder declaration
 - Device ID sharing bidder declaration
 - First-party identifiers for ads on app bidder declaration
 - First-party identifiers for ads on web bidder declaration
 - Full IP address on CTV bidder declaration
 - Publisher provided identifiers bidder declaration
 - Secure signal sharing bidder declaration
 
 - In the filter settings, select a value for bidder preference, and then click Apply. 
Values include:- No declaration
 - Preferred
 - Strongly preferred
 - No preference
 
 - Review the list of bidders the filter returned. To review settings for a specific bidder, under "Name," click the bidder’s name.
 - On the "Insights" tab, next to "Data usage declarations," review the bidder’s preferences.
 - (Optional) To update data sharing for the bidder:
    
- At the top, click Demand channel settings.
 - Under a category, such as "Secure signals," turn the setting on 
or off
.
 
 
Review and update override groups
You can update your data sharing for a demand channel, an override group, or individual bidders within an override group. For general updates to demand channel settings, visit Manage demand channel settings.
The following steps cover updates for override groups based on data declaration preferences.
- Sign in to Google Ad Manager.
 - 
    Navigate to Delivery, then Demand channel settings.
 - Click Override groups.
 - Under "Name," click the name of an override group.
 - (Optional) To update data sharing for all bidders in the override group, under "Settings:"
    
- Click a setting, such as "First-party identifiers for ads on web."
Tip: Bidders that have shared their data declaration preferences are listed under a setting. - Turn the setting on 
or off
.
 
 - Click a setting, such as "First-party identifiers for ads on web."
 - (Optional) To manage bidders in the override group with specific data declaration preferences:
    
- At the top, click Bidders.
 - Next to 
, click Add new filter, then select a filter.
 - In the filter settings, select a value for bidder preference, such as "Preferred," and then click Apply.
Learn more about the available filters. - In the filtered results, click a bidder’s name to review their preferences.
 - To update demand channel settings for that bidder, at the top, click Demand channel settings, then turn a setting on 
or off
.
 
 
Find the demand channel setting for a data declaration
To check the demand channel setting a data declaration relates to, review the following table.
| Data declaration | Demand channel settings category | Demand channel setting | 
|---|---|---|
| Data collection bidder declaration | Data usage and personalization | Data collection | 
| Full IP address on CTV bidder declaration | Device and browser data sharing category | Full IP address on CTV inventory | 
| *Device ID sharing bidder declaration | *No demand channel setting available. Learn about redacting device IDs with non-personalized ads. | |
| Publisher provided identifiers bidder declaration | Publisher data sharing | Publisher provided identifiers (PPID) for programmatic | 
| First-party identifiers for ads on app bidder declaration | First-party identifiers for ads on app | |
| First-party identifiers for ads on web bidder declaration | First-party identifiers for ads on web | |
| Secure signal sharing bidder declaration | Secure signals | Secure signal sharing |