Section 26(1) in The Aadhaar (Authentication) Regulations, 2016
(1)The Authority shall store and maintain authentication transaction data, which shall contain the following information:-(a)authentication request data received including PID block;(b)authentication response data sent(c)meta data related to the transaction.(d)any authentication server side configurations as necessaryProvided that the Authority shall not, in any case, store the purpose of authentication.
