Okla. Stat. tit. 12A, § 4-209
Oklahoma Code Comment
1. Usually, if an error occurs during the encoding process, some person If the amount is over-encoded, the depositor has the excess amount credited to the deposit account. If the amount is under-encoded, the drawer has too little deducted. Oklahoma law prior to the 1992 UCC revisions afforded no clear route of recovery. This Section does, but does not limit the right of the depositary or payor bank, as the case may be, to recover any excess deposit or to charge the drawer's account for the full amount of the item as drawn.
Some MICR fraud losses also have resulted from encoding erroneous routing numbers on checks, thereby interfering with the forward collection process. If the culprit (the customer) cannot be found, the depositary bank will now be liable for all these losses because its customer did the encoding.
2. The retention warranty under subsection (b) runs from the retaining bank. The warranty is that the retaining bank complied with its agreements regarding electronic presentment and retention, if any. The payor bank should ensure that any retention and electronic presentment agreements permit the payor to satisfy the requirements of sub sections 4-406(a) and (b).