Ohio Rev. Code § 3119.862: Support orders may not continue beyond an agreed-upon date in a separation agreement.

Except as provided in division (A)(1) of section 3119.86 of the Revised Code, if a court incorporates a separation agreement described in division (A)(2) of section 3119.86 of the Revised Code into a decree of divorce or dissolution, the court may not require the duty of support to continue beyond the date the child's parents have agreed support should terminate.