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| While substantive procedures may support the accuracy of underlying records, these tests frequently provide no affirmative evidence of segregation of duties because A. Many computerized procedures leave no audit trail of who performed them, so substantive tests may necessarily be limited to inquiries and observation of office personnel. B. The records may be accurate even though they are maintained by persons having incompatible functions. C. Substantive tests relate to the entire period under audit, but tests of controls ordinarily are confined to the period during which the auditor is on the client’s premises. D. Substantive procedures rarely guarantee the accuracy of the records if only a sample of the transactions has been tested. |