September 2026 Release Notes
Enhancement
Subscribe eligibility field
Release date: Available now
Environment: Sandbox and Production
We've added a new field (isSubscribeEnabled) to the List items API response allowing you to identify the items that are eligible to be used as associatedItems in Walmart Subscribe creative assets.
API Contract changes
| API | Change | Description | Technical specifications |
|---|---|---|---|
| List Items API | New field | isSubscribeEnabled | View |
Shared measurement item set discoverability
Release date: Available now
Environment: Sandbox and Production
Item set list, info, and expression endpoints now include shared measurement item sets in results, enabling users to discover and reuse measurement item sets shared with an advertiser account.
Shared measurement item sets can be identified using the isShared field in the List Item sets response.
Additional Resources
Visit the Advertising Help Center to learn more about measurement item sets.
Forecast API change: adGroupId is now optional
adGroupId is now optionalRelease date: Available now
Environment: Sandbox and Production
Generate forecasts without first creating an ad group, enabling more efficient campaign planning that aligns better with advertiser workflows.
API Contract changes
| API | Change | Description | Technical specifications |
|---|---|---|---|
| Reach Estimate v2 | Required field change | adGroupId is now optional | View |
| Delivery Estimate v2 | Required field change | adGroupId is now optional | View |
- Visit the Advertising Help Center to learn more about Display incrementality reporting.
