REQUEST-STATUS;LANGUAGE=en:3.42;Really big irrecoverable error caused by the u
ser
REQUEST-STATUS;USER=MISSING:3.7;Invalid calendar user
+RELATED-TO:person.1@example.com
+RELATED-TO;RELTYPE=PARENT:person.2@example.com
+RELATED-TO;SCHOOL=MEETING:person.3@example.com
END:VTODO
END:VCALENDAR
\ No newline at end of file