[WINDOWS-SECURITY] Network Policy Server discarded the accounting request for a user

alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[WINDOWS-SECURITY] Network Policy Server discarded the accounting request for a user"; json_map:"event_id",".EventID"; json_map:"message",".RenderedDescription"; event_id: 6275; classtype: system-event; program: *Security*; reference: url,github.com/MicrosoftDocs/windowsserverdocs/blob/master/WindowsServerDocs/identity/ad-ds/plan/Appendix-L--Events-to-Monitor.md; sid:5009454; metadata: created_on 2022_11_22, old_sid 5003458; rev: 2;)