Payment determination under Vivad se Vishwas Scheme: designated authority issues conclusive order and declarant must pay promptly. Designated authority must determine and certify the amount payable within fifteen days of a declaration; the declarant must pay and intimate details within fifteen days of the certificate, whereupon the authority records payment. Such determination orders are conclusive and cannot be reopened, and making a declaration does not amount to conceding the tax position or evidencing acquiescence in appellate or writ proceedings.