Section 74(6)(b) in Tamil Nadu Pension Rules, 1978
(b)After completing Form 18, the Head of Office shall send that Form in original to the Audit Officer with a covering letter in Form 19 along with the Government servant's service book and service roll, if any, duly completed up to date and any other documents relied upon for the verification of the service claimed in such a manner that they can be conveniently consulted.