Ohio Rev. Code Ann. § 3115.602
(A) Except as otherwise provided in section 3115.706 of the Revised Code, a support order or income-withholding order of another state or a foreign support order may be registered in this state by sending the following records to the appropriate tribunal in this state:
(4) The name of the obligor and, if known, all of the following:
(D) If two or more orders are in effect, the person requesting registration shall do all of the following: