Okla. Stat. tit. 58, § 58-556

The settlement of the account and the allowance thereof by the

court, or upon appeal, is conclusive against all persons in any way

interested in the estate, saving, however, to all persons laboring

under any legal disability, their right to move for cause to reopen

and examine the account, or to proceed by action against the

executor or administrator, either individually or upon his bond, at

any time before final distribution; and in any action brought by any

such person, the allowance and settlement of such account is prima

facie evidence of its correctness.