FDM.4:5 - Archetypal Grounding

FDM.4:5.1 - A payment, an instruction and a modification

In the constructed loan, 105 is due on day 30. Adequate evidence establishes a payment of 60 by the borrower to the lender. The supplied application rule applies all 60 to that due amount; there are no additional fees or interest. The resulting unpaid amount is 45.

A servicing report still showing 105 unpaid disagrees with that established effect. The model returns the 45 position and the report discrepancy. It retains the original 105 contractual schedule and the actual 60 payment as distinct statements, rather than editing either into the other.

Now suppose the available evidence instead establishes only that the borrower sent a payment instruction for 60. The evidence does not yet establish the event that the supplied terms recognize as payment. The claimed reduction to 45 remains unresolved. The next question is whether that event occurred, not whether subtraction was performed correctly.

A separate pre-funding example has different effect conditions. A valid modification, made by the competent parties under supplied terms, changes a lender’s conditional advance obligation before any money moves. The model follows that rule and its actual occurrence. It does not wait for disbursement to recognize every change.

These examples demonstrate reasoning under their supplied premises. Another instrument’s payment-allocation, formation or modification rule can produce a different result.

FDM.4:5.2 - Deriving the position through an interpreted calculation

Consider a variant in which receipt of 60 is established, but the supplied terms classify it as refundable cash collateral. The terms leave the borrower’s loan obligation of 105 unchanged. Subtracting 60 from 105 still produces 45 arithmetically, but does not describe the remaining loan obligation under these terms. The account instead retains the obligation of 105 and the separate collateral position.

While applying the contractual classification, the modeler is deriving the financial effect and constructing the position account. What the larger account must explain determines what the local calculation may claim. The earlier repayment example permits the subtraction; this collateral example does not. The banking receipt supplies an occurrence to interpret, rather than becoming part of the modeler’s act of interpretation.

Someone who can calculate but cannot interpret the collateral terms needs to learn to interpret them or obtain an adequate interpretation from an appropriate specialist. Once the interpretation is adequate, the account can proceed without a fresh investigation of the already established receipt. If the terms later provide that collateral is applied to the debt, establish the event and effect under that changed condition before updating the obligation.