The id attribute is the QIF id of the event, used for referencing.
Source
<xs:element name="NotableEvent" type="NotableEventType" maxOccurs="unbounded"><xs:annotation><xs:documentation>Each NotableEvent element gives information about a notable event that might occur during an inspection.</xs:documentation></xs:annotation></xs:element>
The required n attribute is the number of notable events in the list.
Source
<xs:complexType name="NotableEventsType"><xs:annotation><xs:documentation>The NotableEventsType defines a list of notable events that might occur during an inspection.</xs:documentation></xs:annotation><xs:sequence><xs:element name="NotableEvent" type="NotableEventType" maxOccurs="unbounded"><xs:annotation><xs:documentation>Each NotableEvent element gives information about a notable event that might occur during an inspection.</xs:documentation></xs:annotation></xs:element></xs:sequence><xs:attribute name="n" type="NaturalType" use="required"><xs:annotation><xs:documentation>The required n attribute is the number of notable events in the list.</xs:documentation></xs:annotation></xs:attribute></xs:complexType>
<xs:attribute name="n" type="NaturalType" use="required"><xs:annotation><xs:documentation>The required n attribute is the number of notable events in the list.</xs:documentation></xs:annotation></xs:attribute>