Demonetisation procedures require prompt survey, stamping of books, targeted enquiries and reporting to verify source of high denomination notes. Demonetisation directives require collection of triplicate declarations by banks, forwarding originals and attested copies to assessing and supervisory officers, stamping and marking of cash books and prime entry records, and use of survey and examination powers where explanations or accounts are unsatisfactory. Enquiries are to be prioritised by value and handled by assessing officers or inspection directorates as appropriate, with mandated history sheets, registers, retention of originals, and monthly progress reports to central inspection authorities to ensure timely completion and coordinated supervision.