The Event Reference facilitates identifying events for data quality reporting and is a mechanism to ensure that event rows are not duplicated. Each event should have a unique Event Reference with repeated submissions of the same event having the same reference. It is anticipated that some local authority case management systems will automatically create a unique reference for events when the record is created. Where the Event Reference is automated, it can be included as the Event Reference. Where an automated unique Event Reference is not available, local authorities should consider a local method to derive an Event Reference, using other data items in the collection such as matching dates, event types and/or a combination of other data fields. It should be noted though that a derived reference should not include any person identifiable information such as DOB, Postcode, name etc, where the Event Reference could be used to identify individuals. Data type: Integer or Alpha-numeric