The purpose of a modify message is to add data to, delete data from, or change data which is a part of a record. The modification may only be made by the agency that originally entered the record.
To modify a record it must be identified by system identification number, case number, and a numeric identifier such as VIN, OAN, or the set of license plate information. These data items are used to identify the record to be modified, and as such they cannot be modified themselves.
Modifying changes the content of a record by substituting other data or adding new data to an established record. Deleting a record takes the item out of the record without substituting new data. . To delete data from an existing record, use the pound sign (#) in the field you wish to delete.