(1) An application to the Appellate Authority under subsection (2) of section 107 shall be filed in FORM GST APL-03, along with the relevant documents, either electronically or otherwise as may be notified by the Commissioner and a provisional acknowledgment shall be issued to the appellant immediately.

(2) Where the decision or order appealed against is uploaded on the common portal, a final acknowledgment, indicating appeal number, shall be issued in FORM GST APL-02 by the Appellate Authority or an officer authorised by him in this behalf and the date of issue of the provisional acknowledgment shall be considered as the date of filing of appeal under sub-rule (1):

Provided that where the decision or order appealed against is not uploaded on the common portal, the appellant shall submit a self-certified copy of the said decision or order within a period of seven days from the date of filing of FORM GST APL-03 and a final acknowledgment, indicating appeal number, shall be issued in FORM GST APL-02 by the Appellate Authority or an officer authorised by him in this behalf, and the date of issue of the provisional acknowledgment shall be considered as the date of filing of appeal:

Provided further that where the said self-certified copy of the decision or order is not submitted within a period of seven days from the date of filing of FORM GST APL-03, the date of submission of such copy shall be considered as the date of filing of appeal.