Ohio Rev. Code § 6115.74
In any case where a notice is provided for in sections 6115.01 to 6115.79, inclusive, of the Revised Code, if the court finds for any reason that due notice was not given, the court shall not thereby lose jurisdiction, and the proceeding in question shall not thereby be void; but the court shall in that case order due notice to be given, and shall continue the hearing until such time as such notice is properly given, and thereupon shall proceed as though notice had been properly given in the first instance.
In case any individual appraisal, assessment, or levy is held void for want of legal notice, or in case the board of directors of the sanitary district determines that any notice with reference to any land is faulty, then the board may file a motion in the original cause asking that the court order notice to be given to the owner of such land and set a time for hearing as provided in such sections. If the original notice as a whole was sufficient and was faulty only with reference to publication as to certain tracts, only the owners of and persons interested in those particular tracts need be notified by such subsequent notice. If the publication of any notice in any county was defective or not made in time, publication of the defective notice is necessary only in the county in which the defect occurred.
R.C. § 6115.74