852: ird-15 depends on an optional element
The constraint ird-15 depends on an optional element existing. When the element does not exist there is no result from the constraint. The rule today: ” ird-15 (Mandatory) Context: CalculationPeriodDates (complex type) [isParametric] terminationDate/unadjustedDate > firstPeriodStartDate/unadjustedDate. ” The element //element(*, CalculationPeriodDates)/firstPeriodStartDate is optional.