Okla. Stat. tit. 74 § 214
The State Auditor and Inspector shall prescribe a uniform system of bookkeeping for the use of all county officials to afford a suitable check upon their mutual acts and ensure a thorough inspection, and to ensure the safety of the state and county funds. He shall have full authority to prescribe a system of bookkeeping for all county officers which shall be in accordance with generally accepted accounting principles, as applied to governmental units, except when in conflict with Oklahoma Statutes, and when necessary instruct or cause to be instructed the state and county officers in the proper mode of keeping the accounts. Provided however, when a conflict with Oklahoma Statutes arises concerning accounting systems for those counties utilizing electronic data processing, the county may request in writing that the State Auditor and Inspector approve an alternate accounting procedure. The State Auditor and Inspector shall have the authority to approve or disapprove such requests. Annually, the State Auditor and Inspector shall provide a report of those counties requesting alternate accounting systems to the Speaker of the House of Representatives and the President Pro Tempore of the Senate. The State Auditor and Inspector shall not change any accounting systems or procedures during the last year of his term of office that would have an impact on the ability of any independent licensed public accountant to provide auditing services to such officers. He shall make a thorough examination of the books, accounts and vouchers of such officers, ascertaining in detail the various items of receipts and expenditures. He shall report to the Governor the refusal or neglect of any state or county officer to obey his instruction. He shall make a report of the result of his examination, which shall be filed in the Office of the State Auditor and Inspector, as well as any failure of duty by any financial officers, and the Governor may cause the result of such examination to be published. Provided, that no county officer shall be required to discard any books or supplies on hand.
Okla. Stat. tit. 74, § 214