Mississippi Code Title 7. Executive Department § 7-7-33

The State Fiscal Officer shall issue disbursement warrants upon satisfactory pre-audit as prescribed by standards and procedures established by the State Fiscal Officer in consultation with the State Auditor's office. Such standards and procedures shall include examination of the bill, invoice, account, payroll or other evidence of the claim, demand or charge and determination that the expenditure or disbursement is regular, legal and correct, and that the claim, demand or charge has not been previously paid. In order to ascertain that goods have been received or services rendered, the State Fiscal Officer may require such evidence as the circumstances may demand. If the expenditure or disbursement is proper, the State Fiscal Officer shall approve the same; otherwise, the State Fiscal Officer shall withhold approval. In order that such regularity and legality may appear, the State Fiscal Officer may return the claim to the department, institution or agency against which the same was issued for correction or amendment and may, by general rule or special order, require such certification or such evidence as the circumstances may demand.