Indiana Code Title 24. Trade Regulation § 24-5-15.5-5

(A) If a signed contract or other writing evidencing the debtor's agreement to the debt exists, a copy of the contract or other writing.

(B) If a signed contract or other writing evidencing the debtor's agreement to the debt does not exist, a copy of a document provided to the debtor while the account was active.

(A) names of all previous owners of the debt and date of each transfer of ownership of the debt, beginning with the name of the original charge off creditor;  and

(B) documentation, or a bill of sale, evidencing the assignment of the debt to the plaintiff debt buyer.