Webhook or API callback on Assign test user licenses Not working

API and Webhooks
1

API Endpoint(s) and/or Zoom API Event(s)
I’m not sure what scopes and webhook events I should be using. I do have the authorization endpoint working but that doesn’t fire in every situation. I also have the RTMS start and stop webhooks working but I’ve tried adding the Billing/Entitlement added/removed for user events.

Description
I have a user managed rtms application in zoom marketplace as a dev app that I’m trying to test. I have a payment account, and pricing plans set for my app. Under the DEV/Local tab I am adding users in the “Assign test user licenses” section but I’m not getting a callback. What scopes and webhooks can I set up to get Zoom to send me when a user is assigned or removed from assignment?

Which App Type (OAuth / Chatbot / JWT / Webhook)?
OAuth

Oauth is working testing locally pointing at https://cs-zoomapp.ngrok.app/api/zoomapp/auth
And my RTMS webhooks are working as well at https://cs-rtms-webhook.ngrok.app/hook
But the entitlements webhooks that I’m pointing at https://cs-zoomapp.ngrok.app/api/zoomapp/entitlements-webhook never get called
**
Error?**
I don’t get any webhook call back to my endpoint when I add a user to the “Assign test user licenses” section of my app.

How To Reproduce
Steps to reproduce the behavior:
1. Try everything… nothing fires!

2

For production license changes, use Zoom’s monetization webhook events rather than the OAuth callback. Zoom lists marketplace.app_user_entitlements_added and marketplace.app_user_entitlements_removed (docs) for subscription licenses assigned to users and unassigned from users. The OAuth redirect callback only indicates that a user authorized the app, not that their license entitlement changed.

For DEV/Local testing, I would use the entitlements API as the source of truth. Zoom’s provisioning testing flow describes assigning a test license, having the user open the app, then checking the user’s plan with the Get app user entitlements API. I don’t see Zoom documenting that the “Assign test user licenses” action emits the production monetization webhook events.

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