Spreadsheet Failure ModeManual Workflow
Root Operational Bottleneck
FX forward settlements and mark-to-market values are typed from broker confirms into a hedge workbook, so MTM moves wait until someone opens the sheet.
Control Hazard & Audit Exposure
Unrecorded MTM balance-sheet adjustments surprise auditors at year end because the workbook was not refreshed to the valuation date.
Deterministic Software ReplacementClient-Owned Architecture
Market Telemetry Ingestion Pipeline with Hedge Accounting and MTM Posting
Market telemetry feed that values each hedge contract at the stored curve and posts MTM and settlement entries with the hedge relationship cited.
Continuous Assertion Rule
MTM assertion: every open hedge must have a valuation on the reporting date from the stored curve, and the posted MTM must equal that valuation or the period cannot close.