Overdue (OV)
Patron has overdue items or has accrued penalties.

Student Fines/Invoice (SFI)
Patron has been invoiced for fines or replacement costs at Host Library.

Institution Invoice (INV)
Home Library has been invoiced by Host Library for replacement costs.

Blocked (BL)
A block imposed by a Home Institution to prevent a Patron from using the CAVAL system.

Note:
The following two reasons no longer exist:
FA Fines and accounts
US Unspecified

Current Blocks which have FA or US as the reason will remain unless altered manually.