GST

I am an existing taxpayer registered under Excise, Service Tax and State Tax Laws such as VAT, Entry Tax, Luxury Tax And Entertainment Tax. I received SMS/ E-mail with Provisional ID and Password. What are next steps` for me? How do I being to enroll with the GST common Portal with Provisional ID and Password?
All Existing taxpayer and VAT dealers will be given a provisional ID and password. You first need to create your username and password using this provisional ID and password at the GST Common Portal as our application.
It is assumed that all existing central Excise taxpayers are already registered under state VAT Department. It covers both central Excise and State VAT registration. To enroll with the GST common portal, you need to perform the following steps.