Ohio Revised Code Title XIII. Commercial Transactions § 1319.11

(A) Two or more creditors of a debtor or co-debtors may join their respective claims together for the purpose of commencing litigation against the debtor or co-debtors.

(B) If a debtor or co-debtor raises a good faith dispute concerning any accounts, bills, or other evidences of indebtedness that have been joined together for litigation pursuant to this section, the court shall separate the disputed account, bill, or other evidence of indebtedness from the action and hear the disputed account, bill, or other evidence of indebtedness on its own merits in a separate action. The court shall charge the filing fee of the separate action to the losing party.