O365 Management Activity API: Webhook Notifications not being received

Question

I've been playing around with the Management Activity API in Office 365 as outlined in the api documentation.

Everything is working as expected, except that when I add a subscription with a notification webhook, the webhook is never called.

I set up the webhook as an Azure function, and when registering the subscription, the validation call is made to the function as expected, and I can confirm that new content is available in the management api as calls to the subscriptions/content endpoint are successful.

A call to the /subscriptions/list endpoint confirms my webhooks are registered and enabled, but a call to /subscriptions/notifications always returns an empty array.

My tenant is a Developer tenant, not sure if that makes a difference?

Answer 1

A week or so after I posted this the notifications started to come through, so not sure what the initial problem was.

I did find, however, that notifications were not very frequent. This may be due to my dev tenant having relatively low activity, so I ended up with a solution that polls the api at regular intervals instead of relying on the webhook notifications.