What would be Graph Query to filter O365 Groups by "customattribute1"

Question

I've a requirement to get all the Office 365 Groups which I belong to and also filter it by "customattribute1" = "Projects"

I had come across following query to get O365 Groups belonging to the user -
/me/memberOf/$/microsoft.graph.group?$filter=GroupType/any(a:a eq 'unified')"

How would I construct a query to do both ? using MS Graph Explorer ?

thanks

Answer 1

That lists which properties you can filter on, whereas this document states which resource types support the custom attributes: https://learn.microsoft.com/en-us/graph/api/resources/onpremisesextensionattributes?view=graph-rest-beta
No REST option currently, outside of the PowerShell module.

Answer 2

Those customAttributes are not currently exposed via the Graph API when it comes to Group objects. If you need to work with them, use Exchange Online PowerShell.