Cost records and audit requirements: companies must maintain detailed cost records and file audited cost reports electronically. These Rules require companies in specified sectors to maintain detailed cost records in Form CRA-1 and, where thresholds are met, to appoint a qualified cost auditor and file appointment and audited reports electronically in Forms CRA-2, CRA-3 and CRA-4. The CRA-1 annexure prescribes exhaustive categories of cost records, allocation and disclosure methods, and requires periodic cost statements, reconciliation with financial accounts, and documentation of related party transactions, abnormal items and methods of valuation.