In Oracle Payroll Cloud, when a costing segment (e.g., cost center) is defined as mandatory and the costing process cannot find a value, a fallback mechanism is needed. If a suspense account is configured at the Payroll level, the costing results for that payroll run are automatically directed to the suspense account (Option A). This ensures that payroll processing completes without errors, and costs are temporarily held in the suspense account until corrected. Option B (blank value) is not allowed for mandatory segments. Option C (error stopping costing) and Option D (no results) do not occur when a suspense account exists, as it acts as a safety net. Oracle documentation confirms this behavior for handling missing mandatory cost segments.