Indirect tax dispute resolution: acknowledgement requires payment with interest and penalty and submission of proof within specified periods. Acknowledgement under section 214(2) of the Finance Act, 2016 acknowledging receipt of a declaration filed under section 214(1) for the Indirect Tax Dispute Resolution Scheme, 2016, and directing the declarant to pay amounts due with applicable interest and an additional penalty within a prescribed short period; upon payment the declarant must furnish Form 3 with proof of payment to the designated authority within seven days, and the acknowledgement records reference, place, date, signature and official seal.