Hi Oauthuser,
Thanks for reaching out.
Could you please confirm on your query, if you are looking to filter the User resource type using description property, User resource have these listed properties and it doesn't have description property.
If you are looking to filter the Group resource type based on description property, as per the documentation. we need to provide the ConsistencyLevel: eventual
in request header along with $count in request Url. Please refer the below screen shot for reference.
Hope this helps.
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