FDM.3:1 - Problem frame

“Loan amount 100” does not say whether 100 is the advance, current principal or payment due. A repayment amount may depend on elapsed time, a reference value, an option or prior events. Its date may depend on a calendar rule rather than a number typed into a report.

Contractual behavior and actual performance also differ. An amount due can remain unpaid. A forecast of receipts requires assumptions about performance even when the contractual schedule is certain.