The charge_on_collateral property indicates the charge that the lender has on the collateral of the loan. To avoid an open-ended enum value, we use integers to represent the order of charge:
- 0 = mixed/combination of charge levels
- 1 = first charge
- 2 = second charge
- 3 = third charge
- ... and so on
The absence of the charge_on_collateral property indicates that the lender has no charge on the collateral and/or that the loan is unsecured.