Assume that you create an exclusive management scope, and you use the CustomAttribute property to filter users by using the New-ManagementScopecmdlet. For example, you run the following command:
In this situation, you receive the following error message:
New-ManagementScope -name Test-RecipientRestrictionFilter {(RecipientType -eq 'usermailbox' -and CustomAttribute10 -eq 'X')} -Exclusive
Property 'CustomAttribute <number>' is not present on object Mailbox.