gistfile1.txt

Get-Mailbox : Cannot bind parameter 'Identity'. Cannot convert value "" to type
"Microsoft.Exchange.Configuration.Tasks.MailboxIdParameter". Error: "Parameter values of type
Microsoft.Exchange.Configuration.Tasks.MailboxIdParameter can't be empty. Specify a value, and try again.
Parameter name: identity"
At C:\scripts\Get_Mailbox_Permissions.Exchange2.ps1:15 char:69
+ ... Fullaccess = (($FullAccess).split("!!") | % {((get-mailbox $_).Displa ...
+                                                                ~~
    + CategoryInfo          : InvalidArgument: (:) [Get-Mailbox], ParameterBindingException
    + FullyQualifiedErrorId : CannotConvertArgumentNoMessage,Microsoft.Exchange.Management.RecipientTasks.GetMailbox