I am trying to add webhook subscriptions for TestFlight build processing completion and TestFlight beta build review completion events. These were showcased in the WWDC25 session:
https://developer.apple.com/videos/play/wwdc2025/324/
Currently, I am able to receive webhook events for distribution updates, and the corresponding checkmark option is available in the App Store Connect portal.
However, there is no checkmark option in the portal to subscribe to beta build-related events. In the video, there is clearly a checkmark option for the beta review event subscription (at 4:55).
The current documentation also does not mention beta processing and beta review event subscriptions. It only lists the event types that are visible in the web portal:
https://developer.apple.com/documentation/appstoreconnectapi/webhookeventtype
When I try to add the BUILD_BETA_DETAIL_EXTERNAL_BETA_STATE_UPDATED event (as shown in the video at 6:10) via the PATCH API request, I get the below error.
"errors": [
{
"id": "****-****-****-****-*********3851",
"status": 409,
"code": "ENTITY_ERROR.ATTRIBUTE.TYPE",
"title": "An attribute in the provided entity has the wrong type",
"detail": "'BUILD_BETA_DETAIL_EXTERNAL_BETA_STATE_UPDATED' is not a valid value for the attribute 'eventTypes/3'.",
"expectedValues": [
"APP_STORE_VERSION_APP_VERSION_STATE_UPDATED",
"BETA_FEEDBACK_CRASH_SUBMISSION_CREATED",
"BETA_FEEDBACK_SCREENSHOT_SUBMISSION_CREATED"
],
"source": {
"pointer": "/data/attributes/eventTypes/3"
}
}
]
}
The App Store Connect web portal also does not provide a checkmark option for subscribing to this event type.
My questions are:
Are the TestFlight build processing completion and beta build review completion webhook events coming soon, or do they already exist?
Are there any other ways to get beta build events apart from polling?
Topic:
App Store Distribution & Marketing
SubTopic:
App Store Connect API
Tags:
Developer Tools
App Store Connect
App Store Connect API