Gst practitioner

Yes , one who has passed the final examination of ICAI

CA is already a GST practitioner. Better than GSTP I would say.. He is very much allowed to take up GST assignments and Need not appear for GSTP exam.. but still if you want to obtain your own portal credentials to facilitate and consolidate your client's work on a single login, you can always go for it.. just follow the regular process and become a GSTP..

There is no need for ca to be a separate gst practitioner because he is expertise for account and taxation field itself..

Yes CA is already a GST Practitioner.