Why is it necessary that a court fee stamp be used while submitting an RTI application?

Babji Yana's answer at Quora on 16th May 2019

Non Judicial Stamp Paper and Court Fee Stamp are not the proper forms of payment of fee while submitting application seeking information under RTI-2005. Yet in some States of India court fee stamps are accepted.

Cash receipt, online payment, postal order, demand draft, banker's cheque are the proper forms of paying both “application fee” of ₹10/- (if not exempt) and “cost of information”.