Query exchange customattribute in an AAD group

Question

I need to be able to somehow create a group in AAD that can query customattributes in exchange.
it is for an fully online environment, so I don't have the tenant admin app available to query as appid in extensionproperty,
what do I need to?

Answer 1

You can query those attributes via Graph (https://learn.microsoft.com/en-us/graph/api/resources/onpremisesextensionattributes?view=graph-rest-1.0), or you can run the query in ExO PowerShell, then pipe it to the corresponding AAD cmdlets. Now, if you want to do thinks dynamically, you're out of luck.