Register to receive your property valuation notice electronically via email. This is a tutorial Video of Examiner Portal of Punjab school education Board. Enter Account Number and EVN Code You need your Valuation Notice postcard or letter with Electronic Valuation Number (EVN) to register for eVN. Valid event types for all chapters are contained in HL7 table 0003 - Event type. The EVN segment is used to communicate trigger event information to receiving applications.