Okla. Stat. tit. 12A, § 4-215
Oklahoma Code Comment
This Section was pre-revision Section 4-213 . Reg. CC requires that all settlements in the forward check collection process be final when made. 12 C.F.R. §229.36(d) . Compare, before Reg. CC, Pracht v. Oklahoma State Bank, 592 P.2d 976 (Okla. 1979). However, this does not mean the payor bank may not collect from the bank to which a dishonored check is resumed pursuant to 12 C.F.R. § 229.30 . Nor is the payor's duty to return the item, or send written notice of dishonor or nonpayment if the item is unavailable (such as in truncation), to be confused with the duty under 12 C.F.R. § 229.33 to send notice of nonpayment in certain cases.
Note that subsection (a) drops completion of the process of posting (which was never defined because Oklahoma did not adopt pre-revision Section 4-109 , which defined it) as a point of payment and as a cut-off point for legal process and stop payment orders under Section 4-303 . This makes it important to consider the adoption of a cut-off hour under sub section 4-303(a)(5) . A bank should be slow to waive any cut-off it may set to favor a good customer whose stop order is late, as such conduct may raise a question of good faith. However, given that good faith is not a basis for action independent of contract or a duty under Section 1-203 (see Rodgers v. Tecumseh Bank, 756 P.2d 1223 (Okla. 1988); Frontier Fed Sav. & Loan Ass'n v. Commercial Bank, N.A., 806 P.2d 1140 (Okla. Ct.App. 1990)), and the item has not been "paid" (for UCC purposes), the matter would seem to be left to the bank's discretion.