This discussion explains how to file the GST Form APL-01 on the GST portal. The process involves logging in, navigating to Services, then User Services, and finally My Applications. From there, you can select 'appeal to appellate authority' to submit your APL-01 form.
First login to gst portal them go to services then choose user services then my application then type appeal to appellate authority this way you can file APL 01