General provisions :

Notwithstanding anything contained elsewhere in the Act and until specifically so or otherwise prescribed or notified or done in accordance with the provisions of the Act,

(a) All persons appointed by the respective Governments for discharging various functions under the Central/State laws relating to taxes on goods or services (which are being subsumed in GST) and continuing in office on the appointed day, shall be deemed to have been appointed as GST officers/Competent Authorities under the respective provisions of the Act.

(b) The Central Government (or the State Government) may issue orders or make rules consistent with the need for smooth transition to GST including the need to take care of matters not specifically covered hereinbefore so long as such matters are not in conflict with the purposes of the Act.