Ohio Rev. Code Ann. § 1309.406
(B) Subject to division (H) of this section, notification under division (A) of this section is not effective:
(3) At the option of an account debtor, if the notification notifies the account debtor to make less than the full amount of any installment or other periodic payment to the assignee, even if:
(D) Except as otherwise provided in division (E) of this section and sections 1309.407 and 1310.31 of the Revised Code, and subject to division (H) of this section, a term in an agreement between an account debtor and an assignor or in a promissory note is ineffective to the extent that it:
(F) Except as provided in sections 1309.407 and 1310.31 of the Revised Code and subject to divisions (H) and (I) of this section, a rule of law, statute, or regulation that prohibits, restricts, or requires the consent of a government, governmental body or official, or account debtor to the assignment or transfer of, or creation of a security interest in, an account or chattel paper is not effective to the extent that the rule of law, statute, or regulation:
(J) Divisions (D) and (F) of this section do not apply to: