Clients can customize their nomination forms with the help of the Client Support Team, and at times, request to remove fields they no longer want to use.
These fields are still recorded in R57, so the report can still show the full details of nominations submitted while they were in use. However, they are marked as "Unavailable" to help users understand why they are not filled in for nominations submitted after they have been removed. The removal date is also stated in the column header.