Principal outstanding over the latest valuation of the loan's ACTIVE collateral, against the target LTV configured on its asset type. Computed per request; nothing is stored. Percentages are percentages (35.00 means 35%). With no target configured targetLtvPercentage and shortfallAmount are null and inShortfall is false - not monitored, rather than healthy. Collateral spanning asset types with different targets is a 400. Requires READ_COLLATERAL.