Pearse Doherty (Donegal, Sinn Fein) | Oireachtas source

Note 1 on page 2 states:

To date Bank of Ireland has submitted 319 eligible cases to the Housing Agency since inception. At the end of H1 2017, 57 cases have completed and a further 19 are under contract.

What do those figures mean? How were the 319 eligible cases deemed eligible? Are these all of the houses that were repossessed or voluntarily surrendered? How is that quantified? Does this note mean that only 57 of those have been taken in hand by the Housing Agency? Can Mr. Mason explain that?