Indiana Code Title 32. Property § 32-28-5-2

Sec. 2. (a) If a grantee has satisfied a lien on real property but the grantor has not recorded that the lien has been satisfied under section 1 of this chapter, the grantor shall, at the request of the grantee, certify that the lien has been satisfied.  The grantor's certification shall be acknowledged by the grantor in the same manner as is required to entitle a conveyance of real property to be recorded.  The grantor's certification shall be recorded by the recorder in whose office the deed is recorded, with reference to the location of the recorded deed.

(b) A recorded certification that a lien has been satisfied operates as a complete discharge of the lien.