I am an applicant/taxpayer. How can I track status (with TRN) of my new registration application that I have submitted on the GST Portal? You can track the status of new registration application using ARN , once Part B of new registration application is submitted on the GST Portal, post-login (using TRN). 2. How can I track the status of my Registration Application? You can track the status of registration application at both pre and post login stage on GST Portal. To view status of your registration application pre-login, navigate to Services > Track Application Status option. Learn how to check GST ARN status , track GST registration application, & understand different GST ARN statuses . Step-by-step process for ARN search & tracking. Learn how to check your GST registration status online using your Application Reference Number ( ARN ) on the official GST portal ( gst .gov.in). Find out the meaning of different GST status codes and what to do if your application is rejected or pending.