People are unsure if they need to register. Let me quote from this article "3.0 Mandatory Registration for Exporters under GST As per CGST Act, the GST registration is mandatory if any single rupee revenue is earned outside the state and from outside India. Hence, if you are an exporter, then you need to take registration under GST." https://www.hubco.in/articles/exporters-under-gst-how-gst-shall-impact-the-exporters-in-india